Finding the Fourth Proportional to 972.61, 1,457.49 and 484.99
Calculator
Solution
The fourth proportional to 972.61, 1,457.49 and 484.99 is: 726.77
Step by Step Solution
- Step 1: Write the proportion equation
972.61 : 1,457.49 = 484.99 : x - Step 2: Convert to fraction form
972.61/1,457.49 = 484.99/x - Step 3: Cross multiply
972.61x = 1,457.49 × 484.99 - Step 4: Simplify right side
972.61x = 706,868.08 - Step 5: Solve for x
x = 706,868.08/972.61 - Step 6: Final answer
x = 726.77
Related Problems
Find fourth proportional to 486.31, 728.75 and 242.50
Half scale
Find fourth proportional to 1,945.22, 2,914.98 and 969.98
Double scale
Find fourth proportional to 973.61, 1,458.99 and 485.99
Similar ratio
Find fourth proportional to 1,458.92, 2,186.24 and 727.49
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.