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Finding the Fourth Proportional to 224.20, 335.54 and 218.38

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Solution

The fourth proportional to 224.20, 335.54 and 218.38 is: 326.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.20 : 335.54 = 218.38 : x
  2. Step 2: Convert to fraction form
    224.20/335.54 = 218.38/x
  3. Step 3: Cross multiply
    224.20x = 335.54 × 218.38
  4. Step 4: Simplify right side
    224.20x = 73,275.23
  5. Step 5: Solve for x
    x = 73,275.23/224.20
  6. Step 6: Final answer
    x = 326.83

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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.