Proportions Quiz

What number should be placed in the first blank to make the proportion true: ( ___ ) : 3 = 6 : 2?

• 6

• 9

• 12

• 15

What number should be placed in the second blank to make the proportion true: 0.9 : 3 = ( ___ ) : 5?

• 1.2

• 1.5

• 1.8

• 2.0

• 3

• 4

• 5

• 6

In the proportion 5:x = 10:20, what is the value of x?

• 2

• 5

• 10

• 15

In the proportion 3:x = 9:12, what is the value of x?

• 4

• 6

• 8

• 10

What is the value of x in the proportion 8:x = 12:6?

• 3

• 4

If the ratio of salt to water is 1:250 and you have 10 g of salt, how much water is needed?

如果盐和水的比例是 1:250，而你有 10 克盐，需要多少水？

• 250 g

• 2500 g

• 3000 g

• 3750 g

A souvenir shop makes airplane models at a scale of 1:60. If the model is 50 cm long, how long is the actual airplane?

一家纪念品商店按 1:60 的比例制作飞机模型。如果模型长 50 厘米，那么实际飞机有多长？

• 30 cm

• 300 cm

• 3000 cm

• 5000 cm

A model train is built at a scale of 1:100. If the model is 25 cm long, how long is the actual train in meters?

一个火车模型是按照 1:100 的比例建造的。如果模型长 25 厘米，那么实际火车的长度是多少米？

• 2.5 m

• 25 m

• 250 m

• 0.25 m

A toy factory made a batch of car models at a scale of 1:32. If the actual car is 480 centimeters long, what is the length of the model in centimeters?

一家玩具厂按照 1:24 的比例制作了一批汽车模型。如果实际汽车长 480 厘米，那么模型的长度是多少厘米？

• 15 cm

• 20 cm

• 48 cm

• 480 cm