Creating and Solving Proportions

Create a proportion and solve for x.

• 18

• 20

• 22

• 24

• 26

Create a proportion and solve for x.

• 10

• 10.5

• 12

• 12.5

• 16

Find the scale factor, then make a proportion and solve for x.

• 9

• 12

• 6

• 8.5

• 10

Create a proportion and solve for x.

• 18.5

• 20

• 21

• 22.5

• 24.5

Find the scale factor. Then create a proportion and solve for x.

• 52.5

• 50

• 48.5

• 54

• 60

Relate the small triangle to the big triangle when creating a proportion and solving for x. Hint: 35 is not a side length of a triangle.

• 16.8

• 27.6

• 25.2

• 28.8

• 30.4

• 630 feet

• 654 feet

• 672 feet

• 688 feet

• 705 feet

• 128 feet

• 135 feet

• 150 feet

• 154 feet

• 160 feet

Find the scale factor, then make and solve a proportion to find the missing value.

• 30

• 34

• 36

• 38

• 40

HO gauge model trains have a scale factor of 1:87. If a real train's engine is 16 feet high, what is the height of the scale model? Hint: after solving proportion, change feet to inches.

• 0.18 inches

• 2.2 inches

• 5.4 inches

• 64.8 inches