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Finding the Fourth Proportional to 182.12, 251.20 and 108.38

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Solution

The fourth proportional to 182.12, 251.20 and 108.38 is: 149.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.12 : 251.20 = 108.38 : x
  2. Step 2: Convert to fraction form
    182.12/251.20 = 108.38/x
  3. Step 3: Cross multiply
    182.12x = 251.20 × 108.38
  4. Step 4: Simplify right side
    182.12x = 27,223.53
  5. Step 5: Solve for x
    x = 27,223.53/182.12
  6. Step 6: Final answer
    x = 149.49

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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.