Advertisements
Advertisements
प्रश्न
Choose the correct answer from the given options :
The third proportional to `6(1)/(4)` and 5 is
पर्याय
4
`8(1)/(2)`
3
none of these
Advertisements
उत्तर
The third proportional to `6(1)/(4)` and 5 is
⇒ `6(1)/(4)` : 5 :: 5 : x
⇒ `(25)/(4)`: 5 :: 5 : x
⇒ x = `(5 xx 5)/(25) xx 4`
⇒ 4
APPEARS IN
संबंधित प्रश्न
Using properties of proportion, solve for x. Given that x is positive:
`(2x + sqrt(4x^2 -1))/(2x - sqrt(4x^2 - 1)) = 4`
Using the properties of proportion, solve for x, given `(x^4 + 1)/(2x^2) = 17/8`.
If q is the mean proportional between p and r, show that: pqr(p + q + r)3 = (pq + qr + rp)3.
What number must be added to each of the number 16, 26 and 40 so that the resulting numbers may be in continued proportion?
Find the value of the unknown in the following proportion :
`1/2 : "m" :: 14/9 : 4/3`
If three quantities are in continued proportion, show that the ratio of the first to the third is the duplicate ratio of the first to the second.
If p, q and r in continued proportion, then prove the following:
(p2 - q2)(q2 + r2) = (q2 - r2)(p2 + q2)
If a, b, c are in continued proportion, prove that: a2 b2 c2 (a-4 + b-4 + c-4) = b-2(a4 + b4 + c4)
Find the missing number in the box in the proportion:
`8/square = 3.2/4`
Determine if the following ratios form a proportion. Also, write the middle terms and extreme terms where the ratios form a proportion.
25 cm : 1 m and ₹ 40 : ₹ 160
