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Finding the Fourth Proportional to 637.47, 960.20 and 628.97

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Solution

The fourth proportional to 637.47, 960.20 and 628.97 is: 947.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.47 : 960.20 = 628.97 : x
  2. Step 2: Convert to fraction form
    637.47/960.20 = 628.97/x
  3. Step 3: Cross multiply
    637.47x = 960.20 × 628.97
  4. Step 4: Simplify right side
    637.47x = 603,934.94
  5. Step 5: Solve for x
    x = 603,934.94/637.47
  6. Step 6: Final answer
    x = 947.39

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.