App Logo

No.1 PSC Learning App

1M+ Downloads
The ratio of the third proportional to 16 & 40 and the mean proportional between 10 & 40 is:

A5 ∶ 1

B1 ∶ 5

C4 ∶ 1

D1 ∶ 4

Answer:

A. 5 ∶ 1

Read Explanation:

mean proportion of 10 & 40 = √400 = 20 Third proportion of 16 & 40 = (40)²/16 = 100 Required ratio = 100 : 20 = 5 : 1


Related Questions:

The angles of a quadrilateral are in the ratio 2: 5: 7: 10. Find the difference between the greatest and the smallest angles of the quadrilateral.
The prices of a scooter and a television set are in the ratio 3 : 2. If a scooter costs Rs. 6000 more than the television set, the price of the television set is ?
Two alloys A and B contain copper and zinc in the ratio 7 : 2 and 5 : 3 respectively. How many kg of A and B must be melted in order to get an alloy of 44 kg containing copper and Zinc in the ratio 3 : 1?
Which number when added to each of the numbers 6, 7, 15, 17 will make the resulting numbers proportional?
If 3 , 60 , 62 , and y are in proportion, then the value of y is: