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Finding the Fourth Proportional to 182.31, 251.47 and 108.61

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Solution

The fourth proportional to 182.31, 251.47 and 108.61 is: 149.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.31 : 251.47 = 108.61 : x
  2. Step 2: Convert to fraction form
    182.31/251.47 = 108.61/x
  3. Step 3: Cross multiply
    182.31x = 251.47 × 108.61
  4. Step 4: Simplify right side
    182.31x = 27,312.16
  5. Step 5: Solve for x
    x = 27,312.16/182.31
  6. Step 6: Final answer
    x = 149.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.