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Finding the Fourth Proportional to 658.32, 988.76 and 629.62

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Solution

The fourth proportional to 658.32, 988.76 and 629.62 is: 945.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.32 : 988.76 = 629.62 : x
  2. Step 2: Convert to fraction form
    658.32/988.76 = 629.62/x
  3. Step 3: Cross multiply
    658.32x = 988.76 × 629.62
  4. Step 4: Simplify right side
    658.32x = 622,541.92
  5. Step 5: Solve for x
    x = 622,541.92/658.32
  6. Step 6: Final answer
    x = 945.65

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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.