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Finding the Fourth Proportional to 224.42, 336.76 and 87.58

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Solution

The fourth proportional to 224.42, 336.76 and 87.58 is: 131.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.42 : 336.76 = 87.58 : x
  2. Step 2: Convert to fraction form
    224.42/336.76 = 87.58/x
  3. Step 3: Cross multiply
    224.42x = 336.76 × 87.58
  4. Step 4: Simplify right side
    224.42x = 29,493.44
  5. Step 5: Solve for x
    x = 29,493.44/224.42
  6. Step 6: Final answer
    x = 131.42

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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.