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Finding the Fourth Proportional to 640.73, 962.12 and 484.56

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Solution

The fourth proportional to 640.73, 962.12 and 484.56 is: 727.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    640.73 : 962.12 = 484.56 : x
  2. Step 2: Convert to fraction form
    640.73/962.12 = 484.56/x
  3. Step 3: Cross multiply
    640.73x = 962.12 × 484.56
  4. Step 4: Simplify right side
    640.73x = 466,206.08
  5. Step 5: Solve for x
    x = 466,206.08/640.73
  6. Step 6: Final answer
    x = 727.61

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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.