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Finding the Fourth Proportional to 234.17, 351.48 and 118.70

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Solution

The fourth proportional to 234.17, 351.48 and 118.70 is: 178.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.17 : 351.48 = 118.70 : x
  2. Step 2: Convert to fraction form
    234.17/351.48 = 118.70/x
  3. Step 3: Cross multiply
    234.17x = 351.48 × 118.70
  4. Step 4: Simplify right side
    234.17x = 41,720.38
  5. Step 5: Solve for x
    x = 41,720.38/234.17
  6. Step 6: Final answer
    x = 178.16

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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.