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Finding the Fourth Proportional to 637.44, 956.10 and 220.92

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Solution

The fourth proportional to 637.44, 956.10 and 220.92 is: 331.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.44 : 956.10 = 220.92 : x
  2. Step 2: Convert to fraction form
    637.44/956.10 = 220.92/x
  3. Step 3: Cross multiply
    637.44x = 956.10 × 220.92
  4. Step 4: Simplify right side
    637.44x = 211,221.61
  5. Step 5: Solve for x
    x = 211,221.61/637.44
  6. Step 6: Final answer
    x = 331.36

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Double scale
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1.5x scale

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.