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Finding the Fourth Proportional to 234.26, 349.87 and 188.70

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Solution

The fourth proportional to 234.26, 349.87 and 188.70 is: 281.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.26 : 349.87 = 188.70 : x
  2. Step 2: Convert to fraction form
    234.26/349.87 = 188.70/x
  3. Step 3: Cross multiply
    234.26x = 349.87 × 188.70
  4. Step 4: Simplify right side
    234.26x = 66,020.47
  5. Step 5: Solve for x
    x = 66,020.47/234.26
  6. Step 6: Final answer
    x = 281.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.