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Finding the Fourth Proportional to 234.12, 351.24 and 69.60

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Solution

The fourth proportional to 234.12, 351.24 and 69.60 is: 104.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.12 : 351.24 = 69.60 : x
  2. Step 2: Convert to fraction form
    234.12/351.24 = 69.60/x
  3. Step 3: Cross multiply
    234.12x = 351.24 × 69.60
  4. Step 4: Simplify right side
    234.12x = 24,446.30
  5. Step 5: Solve for x
    x = 24,446.30/234.12
  6. Step 6: Final answer
    x = 104.42

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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.