Advertisements
Advertisements
Question
Find the fourth proportional of 5, 9 and 45
Solution
Fourth proportional of 5, 9 and 45
`= (9 xx 45)/5 = 81`
APPEARS IN
RELATED QUESTIONS
Find the ratio of the speed of a cycle 15 km per hour to the speed of scooter 30 km per hour.
72% of 25 students are interested in mathematics. How many are not interested in mathematics?
Find duplicate ratio of 3 : 4
Find the value of x, if: (2x + 1) : (3x + 13) is the sub-duplicate ratio of 9 : 25.
Find the duplicate ratio of the following :
(a+b): (a2- b2)
What quantity must be subtracted from each term of the ratio 39 : 89 to make it equal to 2 : 5 ?
Express the following ratios in its simplest form :
48: 54
Express the following ratios in its simplest form :
`3 1/2 : 7`
If x : y = 2 : 3, find the value of (3x + 2y) : (2x + 5y).
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.
Express the given ratio in its simplest form: 10 paise : ₹ 1
Express the given ratio in its simplest form: 200 m : 5 km
Which ratio is greater:
`8/15` or `5/9`
In the example below, find the proportion of the first number to the second.
52, 65
A school collected Rs 2100 for charity. It was decided to divide the money between an orphanage and a blind school in the ratio of 3 : 4. How much money did each receive?
In a business, A invests Rs 50000 for 6 months, B Rs 60000 for 4 months and C, Rs 80000 for 5 months. If they together earn Rs 18800 find the share of each.
The ratio 4:16 is in its lowest form.
Find the ratio of the following:
30 minutes to 45 minutes
In a year, Seema earns ₹ 1,50,000 and saves ₹ 50,000. Find the ratio of money that she saves to the money she spends.
225% is equal to ______.