Solve Proportional Relationships

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other is constant.

Front

If a/b = c/d, what are a and d called?

Back

a and d are called the extremes of the proportion.

Front

If a/b = c/d, what are b and c called?

Back

b and c are called the means of the proportion.

Front

What is the Cross Product Property?

Back

The Cross Product Property states that in a proportion, the product of the extremes is equal to the product of the means (ad = bc).

Front

Solve for x: 3/4 = x/16

Back

x = 12

Front

Solve for x: 5/x = 2/8

Back

x = 20

Front

What does it mean if two ratios are equivalent?

Back

It means that they represent the same relationship between quantities.

Front

How do you find a missing value in a proportion?

Back

You can find a missing value by cross-multiplying and solving for the unknown.

Front

If 2/3 = x/9, what is x?

Back

x = 6

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant ratio in a proportional relationship.