Select the option that is related to the third number in the same way as the second number is related to the first number and the sixth number is related to the fifth number.

15 : 125 :: 27 : ? :: 36: 1728

729

15 : 125 :: 27 : ? :: 36: 1728

The logic followed here is ⇒ (1st no. ÷ 3 )³ = 2nd no.

Here,

15 : 125

⇒ (15 ÷ 3)³ = 5³ = 125

and

36 : 1728

⇒ (36 ÷ 3 )³ = 12³ = 1728

Hence

27 : ?

⇒ (27 ÷ 3)³ = 9³ = 729