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Finding the Fourth Proportional to 234.45, 351.25 and 112.54

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Solution

The fourth proportional to 234.45, 351.25 and 112.54 is: 168.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.45 : 351.25 = 112.54 : x
  2. Step 2: Convert to fraction form
    234.45/351.25 = 112.54/x
  3. Step 3: Cross multiply
    234.45x = 351.25 × 112.54
  4. Step 4: Simplify right side
    234.45x = 39,529.68
  5. Step 5: Solve for x
    x = 39,529.68/234.45
  6. Step 6: Final answer
    x = 168.61

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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.