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Finding the Fourth Proportional to 155.73, 234.41 and 140.82

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Solution

The fourth proportional to 155.73, 234.41 and 140.82 is: 211.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.73 : 234.41 = 140.82 : x
  2. Step 2: Convert to fraction form
    155.73/234.41 = 140.82/x
  3. Step 3: Cross multiply
    155.73x = 234.41 × 140.82
  4. Step 4: Simplify right side
    155.73x = 33,008.91
  5. Step 5: Solve for x
    x = 33,008.91/155.73
  6. Step 6: Final answer
    x = 211.96

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.