Finding the Fourth Proportional to 816.72, 1,126.62 and 537
Calculator
Solution
The fourth proportional to 816.72, 1,126.62 and 537 is: 740.76
Step by Step Solution
- Step 1: Write the proportion equation
816.72 : 1,126.62 = 537 : x - Step 2: Convert to fraction form
816.72/1,126.62 = 537/x - Step 3: Cross multiply
816.72x = 1,126.62 × 537 - Step 4: Simplify right side
816.72x = 604,994.94 - Step 5: Solve for x
x = 604,994.94/816.72 - Step 6: Final answer
x = 740.76
Related Problems
Find fourth proportional to 408.36, 563.31 and 268.50
Half scale
Find fourth proportional to 1,633.44, 2,253.24 and 1,074
Double scale
Find fourth proportional to 817.72, 1,128 and 538
Similar ratio
Find fourth proportional to 1,225.08, 1,689.93 and 805.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.