7.4 - 7.6 Review

Solve the proportion:

• 4
• 8
• 14
• 10

Solve the proportion.

• 25
• 20
• 49
• 4

The scale factor of two similar figures is 4 : 5. What is the ratio of their perimeters?

• 4 : 5

• 16 : 25

• 64 : 125

• 8 : 10

Which statement best describes what a ratio is.

• A number
• A comparison of two quantities using division.
• A comparison
• A comparison of many things.

If the ratio of 2 round dinner plates is 2 : 5, what is the ratio of their areas?

• 2 : 5

• 1 : 5

• 4 : 10

• 4 : 25

The playing surfaces of two foosball tables are similar. The ratio of the corresponding side lengths  is 10:7. What is the ratio of the areas? 

• 200: 494
• 100 : 28
• 832 : 48
• 100 : 49

What is the perimeter ratio of the following rectangles?

• 7/6

• 10/6

• 5/3

• 10/7

What is the area ratio of the following rectangles?

• 10/7

• 100/49

• 100/36

• 4/36

What are similar shapes?

• shapes that have the same shape, but not necessarily the same size

• a comparison of the sizes of the parts of the scale drawing to the actual sizes on the original object.

• sides that are in the same position in different plane figures

• sides that have different ratios

If the ratio of perimeters of 2 triangles is 3:4, and the area of the smaller triangle is 324, what is the area of the larger triangle?

• 81

• 432

• 576

• 243