Proportions Missing Side Length

For the pair of similar figures, find the length of each side marked with a variable.

• 8 in

• 1 in

• 9.8 in

• 9.3 in

CHALLENGE! Solve for x. (You will need to set up the proportion, and solve using the distributive property).

• x = 4

• x = 135

• x = 1/4

• x = 2

What is true about the sides of similar figures?

• Corresponding sides are proportional.

• Corresponding sides are congruent.

• Opposite sides are proportional.

• Opposite sides are congruent.

The pair of figures is similar. Find the missing side.

• x = 10

• x = 4

• x = 2

• x = 5

Review the picture. Find the missing side measurement in the picture using a proportion.

• x = 900 m

• x = 52 m

• x = 25 m

• x = 0.04 m

Find y.

• 144

• 18

• 72

• 12

Find missing side

• 5

• 7

• 9

• 11

To find the height of a very tall pine tree, you place a mirror on the ground and stand where you can see the top of the pine tree.  How tall is the tree? Hint: the figures are similar triangles.

• 8 feet

• 72 feet

• 36 feet

• 144 feet

Solve for f.

• 6

• 4

• 3

• 8

A rectangular garden is 45 ft wide and 70 ft long. On a blueprint, the width is 9 in. Identify the length on the blueprint. 

• 7 in

• 9 in

• 12 in

• 14 in