**Proportions**

A proportion is a statement that two ratios are equal.

It is an equation with a ratio on each side.

Example: 4/8 = 2/4

When one of the four numbers in a proportion is

unknown, This is called solving the proportion.

Example: Solve for y: 1/2 = y/8.

Proportions and Similar Figures

Comparing Ratios- How to tell if to

ratios are equal by Using Proportion