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Finding the Fourth Proportional to 234.26, 323.29 and 129.35

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Solution

The fourth proportional to 234.26, 323.29 and 129.35 is: 178.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.26 : 323.29 = 129.35 : x
  2. Step 2: Convert to fraction form
    234.26/323.29 = 129.35/x
  3. Step 3: Cross multiply
    234.26x = 323.29 × 129.35
  4. Step 4: Simplify right side
    234.26x = 41,819.26
  5. Step 5: Solve for x
    x = 41,819.26/234.26
  6. Step 6: Final answer
    x = 178.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.