Finding the Fourth Proportional to 758.52, 1,135.95 and 432.90
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Solution
The fourth proportional to 758.52, 1,135.95 and 432.90 is: 648.30
Step by Step Solution
- Step 1: Write the proportion equation
758.52 : 1,135.95 = 432.90 : x - Step 2: Convert to fraction form
758.52/1,135.95 = 432.90/x - Step 3: Cross multiply
758.52x = 1,135.95 × 432.90 - Step 4: Simplify right side
758.52x = 491,747.08 - Step 5: Solve for x
x = 491,747.08/758.52 - Step 6: Final answer
x = 648.30
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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.