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Finding the Fourth Proportional to 375.50, 562.78 and 131.73

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Solution

The fourth proportional to 375.50, 562.78 and 131.73 is: 197.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.50 : 562.78 = 131.73 : x
  2. Step 2: Convert to fraction form
    375.50/562.78 = 131.73/x
  3. Step 3: Cross multiply
    375.50x = 562.78 × 131.73
  4. Step 4: Simplify right side
    375.50x = 74,135.01
  5. Step 5: Solve for x
    x = 74,135.01/375.50
  6. Step 6: Final answer
    x = 197.43

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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.