Advertisements
Advertisements
प्रश्न
Find the fourth proportional to 1.5, 2.5, 4.5
Advertisements
उत्तर
Let fourth proportional to 1.5, 2.5, 4.5 be x
then 1.5 : 2.5 : : 4.5 : x
∴ 1.5 × x = 2.5 x 4.5
x = `(2.5 xx 4.5)/(1.5)`
= 7.5.
APPEARS IN
संबंधित प्रश्न
If y is the mean proportional between x and z, prove that: `(x^2 - y^2 + z^2)/(x^(-2) - y^(-2) + z^(-2)) = y^4`.
Find the fourth proportion to the following:
0.7, 4.9 and 1.6
Find the value of x in the following proportions : x : 50 :: 3 : 2
Determine if the following numbers are in proportion:
22, 33, 42, 63
Write (T) for true and (F) for false in case of the following:
32 kg : Rs 36 : : 8 kg : Rs 9
The cost of 18 chairs is Rs 22770. How many such chairs can be bought for Rs 10120?
If a, b, c are in continued proportion, prove that: `(pa^2+ qab+ rb^2)/(pb^2+qbc+rc^2) = a/c`
Choose the correct answer from the given options :
The fourth proportional to 3, 4, 5 is
If b : a = c : d, then a, b, c, d are in proportion.
Sleeping time of a python in a 24 hour clock is represented by the shaded portion in the following figure.
The ratio of sleeping time to awaking time is ______.
