Advertisements
Advertisements
प्रश्न
Find the fourth proportional to 3, 12, 15
Advertisements
उत्तर
Let fourth proportional to
3, 12, 15 be x.
then 3 : 12 :: 15 : x
⇒ 3 × x = 12 x 15
x = `(12 xx 15)/(3)`
= 60.
APPEARS IN
संबंधित प्रश्न
If p + r = mq and `1/q + 1/s = m/r`; then prove that p : q = r : s.
If `a/b = c/d` prove that each of the given ratios is equal to
`(5a + 4c)/(5b + 4d)`
If x and y be unequal and x : y is the duplicate ratio of x + z and y + z, prove that z is mean proportional between x and y.
If `(4m + 3n)/(4m - 3n) = 7/4`, use properties of proportion to find `(2m^2 - 11n^2)/(2m^2 + 11n^2)`
If ( a+c) : b = 5 : 1 and (bc + cd) : bd = 5 : 1, then prove that a : b = c : d
The 1st, 3rd, and 4th terms of a proportion are 12, 8, and 14 respectively. Find the 2nd term.
If b : a = c : d, then a, b, c, d are in proportion.
If x, y and z are in continued proportion, Prove that:
`x/(y^2.z^2) + y/(z^2.x^2) + z/(x^2.y^2) = 1/x^3 + 1/y^3 + 1/z^3`
If x, 2, 10 and y are in continued proportion, the values of x and y are respectively:
The first, third, and fourth terms of a proportion are 9, 24, and 32. Find the second term.
