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Finding the Fourth Proportional to 658.14, 986.60 and 349.53

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Solution

The fourth proportional to 658.14, 986.60 and 349.53 is: 523.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.14 : 986.60 = 349.53 : x
  2. Step 2: Convert to fraction form
    658.14/986.60 = 349.53/x
  3. Step 3: Cross multiply
    658.14x = 986.60 × 349.53
  4. Step 4: Simplify right side
    658.14x = 344,844.55
  5. Step 5: Solve for x
    x = 344,844.55/658.14
  6. Step 6: Final answer
    x = 523.97

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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.