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Finding the Fourth Proportional to 252.38, 379.89 and 222.62

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Solution

The fourth proportional to 252.38, 379.89 and 222.62 is: 335.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.38 : 379.89 = 222.62 : x
  2. Step 2: Convert to fraction form
    252.38/379.89 = 222.62/x
  3. Step 3: Cross multiply
    252.38x = 379.89 × 222.62
  4. Step 4: Simplify right side
    252.38x = 84,569.21
  5. Step 5: Solve for x
    x = 84,569.21/252.38
  6. Step 6: Final answer
    x = 335.08

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.