The mean proportional between 54 and 6 is x, and the fourth proportional of 2, 3, 12 .... Is y. What is x : y?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 1 : 1.
x = √(54 × 6) = √(324) = 18
y = (3 × 12)/2 = 18
x : y = 18 : 18 = 1 : 1