Finding the Fourth Proportional to 718.14, 990.36 and 571.26
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Solution
The fourth proportional to 718.14, 990.36 and 571.26 is: 787.80
Step by Step Solution
- Step 1: Write the proportion equation
718.14 : 990.36 = 571.26 : x - Step 2: Convert to fraction form
718.14/990.36 = 571.26/x - Step 3: Cross multiply
718.14x = 990.36 × 571.26 - Step 4: Simplify right side
718.14x = 565,753.05 - Step 5: Solve for x
x = 565,753.05/718.14 - Step 6: Final answer
x = 787.80
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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.