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Finding the Fourth Proportional to 224.54, 336.72 and 213.20

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Solution

The fourth proportional to 224.54, 336.72 and 213.20 is: 319.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.54 : 336.72 = 213.20 : x
  2. Step 2: Convert to fraction form
    224.54/336.72 = 213.20/x
  3. Step 3: Cross multiply
    224.54x = 336.72 × 213.20
  4. Step 4: Simplify right side
    224.54x = 71,788.70
  5. Step 5: Solve for x
    x = 71,788.70/224.54
  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.