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Finding the Fourth Proportional to 224.68, 337.56 and 212.80

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Solution

The fourth proportional to 224.68, 337.56 and 212.80 is: 319.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.68 : 337.56 = 212.80 : x
  2. Step 2: Convert to fraction form
    224.68/337.56 = 212.80/x
  3. Step 3: Cross multiply
    224.68x = 337.56 × 212.80
  4. Step 4: Simplify right side
    224.68x = 71,832.77
  5. Step 5: Solve for x
    x = 71,832.77/224.68
  6. Step 6: Final answer
    x = 319.71

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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.