Finding the Fourth Proportional to 716.91, 989.17 and 418.08
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Solution
The fourth proportional to 716.91, 989.17 and 418.08 is: 576.85
Step by Step Solution
- Step 1: Write the proportion equation
716.91 : 989.17 = 418.08 : x - Step 2: Convert to fraction form
716.91/989.17 = 418.08/x - Step 3: Cross multiply
716.91x = 989.17 × 418.08 - Step 4: Simplify right side
716.91x = 413,552.19 - Step 5: Solve for x
x = 413,552.19/716.91 - Step 6: Final answer
x = 576.85
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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.