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Finding the Fourth Proportional to 640.66, 962.15 and 332.73

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Solution

The fourth proportional to 640.66, 962.15 and 332.73 is: 499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    640.66 : 962.15 = 332.73 : x
  2. Step 2: Convert to fraction form
    640.66/962.15 = 332.73/x
  3. Step 3: Cross multiply
    640.66x = 962.15 × 332.73
  4. Step 4: Simplify right side
    640.66x = 320,136.17
  5. Step 5: Solve for x
    x = 320,136.17/640.66
  6. Step 6: Final answer
    x = 499.70

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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.