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Instructional Video11:29
Curated Video

Proportions

9th - 12th
In this video lesson we will learn how to write and solve a proportion. We will use a proportion to determine if two ratios are equal. We will learn that if two ratios form a proportion there is a proportional relationship. We will solve...
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Instructional Video5:05
Brian McLogan

Solving a word problem using proportions

12th - Higher Ed
👉 Learn how to solve proportions. Two ratios are said to be proportional when the two ratios are equal. Thus, proportion problems are problems involving the equality of two ratios. When given a proportion problem with an unknown, we...
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Instructional Video1:53
Brian McLogan

What is a ratio

12th - Higher Ed
👉 Learn how to solve proportions. Two ratios are said to be proportional when the two ratios are equal. Thus, proportion problems are problems involving the equality of two ratios. When given a proportion problem with an unknown, we...
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Instructional Video2:35
Curated Video

How to Use a RATIO | 6.RP.A.3

9th - 12th
In this math video we will learn how to use a ratio. We will be given a ratio of mass to volume. We will review how to write a ratio and how to write a proportion using equivalent ratios. We will use the given information and identify...
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Instructional Video5:55
Curated Video

Solving Multistep Ratio and Percent Problems Using Proportions

K - 5th
In this video, the teacher explains how to solve multistep ratio and percent problems using proportions. They use examples of applying coupons and taxes to demonstrate the concept. The teacher also clarifies the misconception that the...
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Instructional Video4:08
Brian McLogan

Given a ratio of angles for a triangle find the actual measurement

12th - Higher Ed
👉 Learn how to solve with the ratio of sides and angles of a triangle. Given the ratio of the sides of a triangle and the perimeter of the triangle, we can solve for the actual lengths of the triangle. Similarly, when the ratio of the...
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Instructional Video4:06
Curated Video

Determining the Constant of Proportionality from a Graph

K - 5th
This video explains how to determine the constant of proportionality from a graph. It demonstrates the process using an example of time and distance. The constant of proportionality can be found by finding the ratio of y to x, and it...
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Instructional Video5:46
Curated Video

Understanding Scale Factors and Proportions

K - 5th
In this video, the teacher explains how to find the scale factor or constant of proportionality in an architect's scale. The concept of ratios, proportions, and scale factors is introduced, and division is used to determine the scale...
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Instructional Video12:31
Curated Video

Graphs of Proportional Relationships and Constant of Proportionality

9th - 12th
In this video, the teacher explains how to identify proportional relationships in tables and graphs, and how to determine the constant of proportionality. The lesson includes examples and step-by-step instructions for finding the...
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Instructional Video1:24
Brian McLogan

Determining if two ratios create a proportion

12th - Higher Ed
👉 Learn how to solve proportions. Two ratios are said to be proportional when the two ratios are equal. Thus, proportion problems are problems involving the equality of two ratios. When given a proportion problem with an unknown, we...
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Instructional Video1:36
Brian McLogan

How to solve a rational equation as a proportion

12th - Higher Ed
👉 Learn how to solve proportions. Two ratios are said to be proportional when the two ratios are equal. Thus, proportion problems are problems involving the equality of two ratios. When given a proportion problem with an unknown, we...
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Instructional Video2:23
Brian McLogan

Applying direct variation to a proportion so solve for the missing variable

12th - Higher Ed
👉 Learn how to solve proportions. Two ratios are said to be proportional when the two ratios are equal. Thus, proportion problems are problems involving the equality of two ratios. When given a proportion problem with an unknown, we...
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Instructional Video1:34
Brian McLogan

Solving a proportion by cross multiplication with decimals

12th - Higher Ed
👉 Learn how to solve proportions. Two ratios are said to be proportional when the two ratios are equal. Thus, proportion problems are problems involving the equality of two ratios. When given a proportion problem with an unknown, we...
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Instructional Video2:47
Brian McLogan

Solving a proportion using inverse operations

12th - Higher Ed
👉 Learn how to solve proportions. Two ratios are said to be proportional when the two ratios are equal. Thus, proportion problems are problems involving the equality of two ratios. When given a proportion problem with an unknown, we...
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Instructional Video3:00
Brian McLogan

How to use proportions and direct variation to solve for x

12th - Higher Ed
👉 Learn how to solve proportions. Two ratios are said to be proportional when the two ratios are equal. Thus, proportion problems are problems involving the equality of two ratios. When given a proportion problem with an unknown, we...
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Instructional Video7:53
Curated Video

Proportion Problems

3rd - Higher Ed
"Proportion Problems" shows how to solve for the unknown value in proportions by comparing their equivalent values on number line diagrams.
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Instructional Video1:37
Curated Video

GCSE Secondary Maths Age 13-17 - Ratio, Proportion & Rates of Change: Direct Proportionality - Explained

9th - 12th
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow steps. This video...
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Instructional Video2:51
Curated Video

GCSE Secondary Maths Age 13-17 - Ratio, Proportion & Rates of Change: Proportionality - Explained

9th - 12th
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow steps. This video...
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Instructional Video7:26
Cerebellum

Ratio and Proportion

9th - 12th
This video covers exam strategy, Ratio and Proportion. This is part 5 from the series 'Introduction to the Math Section of the SAT'.
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Instructional Video3:03
Brian McLogan

ACT SAT PREP Learn how to determine the final weight given a ratio of weights

12th - Higher Ed
ACT SAT PREP Learn how to determine the final weight given a ratio of weights
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Instructional Video7:03
Curated Video

Finding Unit Rates from a Graph of a Proportional Relationship

9th - 12th
This video lesson will provide instruction for students to learn how to find a rate from the graph of a proportional relationship. Students will be instructed how to interpret a point on a graph and use this to find the unit rate. We...
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Instructional Video8:52
Curated Video

Direct and Inverse Proportion

9th - 12th
This video shows the process for solving the problem presented in IGCSE A June 2018 paper 2H Q16, which involves direct and inverse proportions. Students will understand the concept of proportional relationships in mathematics and how...
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Instructional Video1:48
Brian McLogan

How to apply the triangle proportionality theorem to determine the missing side

12th - Higher Ed
👉 Learn how to solve for the unknown in a triangle divided internally such that the division is parallel to one of the sides of the triangle. The triangle proportionality theorem states that if a line is parallel to one side of a...
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Instructional Video4:06
Brian McLogan

How to solve for y using similarity and proportions

12th - Higher Ed
Learn how to solve with similar polygons. Two polygons are said to be similar if the corresponding angles are congruent (equal). When two polygons are similar the corresponding sides are proportional. Knowledge of the length of the sides...

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