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Finding the Fourth Proportional to 496.52, 742.95 and 387.17

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Solution

The fourth proportional to 496.52, 742.95 and 387.17 is: 579.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.52 : 742.95 = 387.17 : x
  2. Step 2: Convert to fraction form
    496.52/742.95 = 387.17/x
  3. Step 3: Cross multiply
    496.52x = 742.95 × 387.17
  4. Step 4: Simplify right side
    496.52x = 287,647.95
  5. Step 5: Solve for x
    x = 287,647.95/496.52
  6. Step 6: Final answer
    x = 579.33

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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.