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Finding the Fourth Proportional to 658.42, 986.68 and 483.71

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Solution

The fourth proportional to 658.42, 986.68 and 483.71 is: 724.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.42 : 986.68 = 483.71 : x
  2. Step 2: Convert to fraction form
    658.42/986.68 = 483.71/x
  3. Step 3: Cross multiply
    658.42x = 986.68 × 483.71
  4. Step 4: Simplify right side
    658.42x = 477,264.56
  5. Step 5: Solve for x
    x = 477,264.56/658.42
  6. Step 6: Final answer
    x = 724.87

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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.