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Finding the Fourth Proportional to 224.78, 336.96 and 87.89

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Solution

The fourth proportional to 224.78, 336.96 and 87.89 is: 131.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.78 : 336.96 = 87.89 : x
  2. Step 2: Convert to fraction form
    224.78/336.96 = 87.89/x
  3. Step 3: Cross multiply
    224.78x = 336.96 × 87.89
  4. Step 4: Simplify right side
    224.78x = 29,613.73
  5. Step 5: Solve for x
    x = 29,613.73/224.78
  6. Step 6: Final answer
    x = 131.75

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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.