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Finding the Fourth Proportional to 234.97, 353.87 and 209.52

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Solution

The fourth proportional to 234.97, 353.87 and 209.52 is: 315.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.97 : 353.87 = 209.52 : x
  2. Step 2: Convert to fraction form
    234.97/353.87 = 209.52/x
  3. Step 3: Cross multiply
    234.97x = 353.87 × 209.52
  4. Step 4: Simplify right side
    234.97x = 74,142.58
  5. Step 5: Solve for x
    x = 74,142.58/234.97
  6. Step 6: Final answer
    x = 315.54

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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.