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Finding the Fourth Proportional to 658.92, 986.31 and 493.41

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Solution

The fourth proportional to 658.92, 986.31 and 493.41 is: 738.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.92 : 986.31 = 493.41 : x
  2. Step 2: Convert to fraction form
    658.92/986.31 = 493.41/x
  3. Step 3: Cross multiply
    658.92x = 986.31 × 493.41
  4. Step 4: Simplify right side
    658.92x = 486,655.22
  5. Step 5: Solve for x
    x = 486,655.22/658.92
  6. Step 6: Final answer
    x = 738.56

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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.