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Finding the Fourth Proportional to 234.12, 323.06 and 140.90

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Solution

The fourth proportional to 234.12, 323.06 and 140.90 is: 194.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.12 : 323.06 = 140.90 : x
  2. Step 2: Convert to fraction form
    234.12/323.06 = 140.90/x
  3. Step 3: Cross multiply
    234.12x = 323.06 × 140.90
  4. Step 4: Simplify right side
    234.12x = 45,519.15
  5. Step 5: Solve for x
    x = 45,519.15/234.12
  6. Step 6: Final answer
    x = 194.43

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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.