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Finding the Fourth Proportional to 234.28, 351.42 and 105.88

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Solution

The fourth proportional to 234.28, 351.42 and 105.88 is: 158.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.28 : 351.42 = 105.88 : x
  2. Step 2: Convert to fraction form
    234.28/351.42 = 105.88/x
  3. Step 3: Cross multiply
    234.28x = 351.42 × 105.88
  4. Step 4: Simplify right side
    234.28x = 37,207.82
  5. Step 5: Solve for x
    x = 37,207.82/234.28
  6. Step 6: Final answer
    x = 158.82

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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.