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Finding the Fourth Proportional to 498.77, 747.17 and 396.23

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Solution

The fourth proportional to 498.77, 747.17 and 396.23 is: 593.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.77 : 747.17 = 396.23 : x
  2. Step 2: Convert to fraction form
    498.77/747.17 = 396.23/x
  3. Step 3: Cross multiply
    498.77x = 747.17 × 396.23
  4. Step 4: Simplify right side
    498.77x = 296,049.19
  5. Step 5: Solve for x
    x = 296,049.19/498.77
  6. Step 6: Final answer
    x = 593.56

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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.