Brian McLogan
What is the triangle proportionality theorem
👉 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...
NASA
NASA | Wall*E Learns About Proportions
Through a partnership of intergalactic proportions, NASA and Disney/PIxar have teamed up to bring Wall*E into the classroom! In this video, students learn about how to find the size of the moon using everyday objects with a little help...
Brian McLogan
What is cross multiplication
👉 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...
Brian McLogan
Using the proportion of parallel lines to determine the missing length of a triangle
👉 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...
Brian McLogan
What is a geometric mean
Learn about the geometric mean of numbers. The geometric mean of n numbers is the nth root of the product of the numbers. To find the geometric mean of n numbers, we first multiply the numbers and then take the nth root of the product.
Brian McLogan
Showing two triangles are similar using SAS
👉 Learn how to determine whether two triangles are similar given the coordinate points of the vertices of the triangle. Two triangles are said to be equal when the corresponding angles of the triangles are congruent (equal) or when the...
Brian McLogan
Solve y using cross multiplication - literal equation
👉 Learn how to solve literal equations. A literal equation is an equation where the unknown values are represented by variables. To solve a literal equation means to make one of the variables the subject of the formula. When the literal...
Brian McLogan
How to find the missing side of two similar triangles
👉 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...
Curated Video
GCSE Secondary Maths Age 13-17 - Number: Proportions - Explained
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...
Brian McLogan
How to determine the altitude by using the geometric mean
Learn about the geometric mean of numbers. The geometric mean of n numbers is the nth root of the product of the numbers. To find the geometric mean of n numbers, we first multiply the numbers and then take the nth root of the product.
Brian McLogan
Solving a rational equation by not using cross multiplication
👉 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...
Curated Video
Making Lemonade (Graph, create and complete a table of equivalent ratios)
Devon is making lemonade from a mix. For every 2 tablespoons of lemonade powder, he needs 3 cups of water. What is the ratio of lemonade powder to water?
Brian McLogan
Tutorial-Solve a proportion when the variable is in denominator and numerator ex 16, (3+2x)/(3–2x)=3
Tutorial-Solve a proportion when the variable is in denominator and numerator ex 16, (3+2x)/(3–2x)=3
Curated Video
Constant of Proportionality
Identify the constant of proportionality when given a table or a graph.
Brian McLogan
ACT SAT Prep Learn how to use proportions to determine the number of pears to use in a salad
ACT SAT Prep Learn how to use proportions to determine the number of pears to use in a salad
Brian McLogan
ACT SAT Prep How to determine the percentage of a group of students
ACT SAT Prep How to determine the percentage of a group of students
Brian McLogan
How to use the medians of similar triangles to determine the missing length
👉 Learn how to solve with similar triangles. Two triangles are said to be similar if the corresponding angles are congruent (equal). Note that two triangles are similar does not imply that the length of the sides are equal but the sides...
Brian McLogan
How to solve a proportion with a variable in the denominator
👉 Learn how to solve rational equations. A rational expression is an expression in the form of a fraction where the numerator and/or the denominator are/is an algebraic expression. There are many ways to solve rational expressions, one...
Brian McLogan
ACT SAT Prep Using ratios to determine the number of eggs needed to make muffins
ACT SAT Prep Using ratios to determine the number of eggs needed to make muffins
Brian McLogan
How to solve a proportion using the cross product
👉 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...
Brian McLogan
Using the geometric mean to determine the missing parts of a triangle
Learn about the geometric mean of numbers. The geometric mean of n numbers is the nth root of the product of the numbers. To find the geometric mean of n numbers, we first multiply the numbers and then take the nth root of the product.
Brian McLogan
How do you solve proportions
👉 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...
Curated Video
Solving Multi-Step Problems with Proportions and Equations
In this video, the teacher explains how to find the percent of a quantity using proportions and equations. They provide examples and step-by-step explanations to help students understand and solve multistep percent problems.
Curated Video
Proportionality
What is proportionality? How does it relate to pattern? Learn the answers to these questions and explore the basics of proportional relationships in this video.