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Finding the Fourth Proportional to 182.38, 251.61 and 120.13

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Solution

The fourth proportional to 182.38, 251.61 and 120.13 is: 165.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.38 : 251.61 = 120.13 : x
  2. Step 2: Convert to fraction form
    182.38/251.61 = 120.13/x
  3. Step 3: Cross multiply
    182.38x = 251.61 × 120.13
  4. Step 4: Simplify right side
    182.38x = 30,225.31
  5. Step 5: Solve for x
    x = 30,225.31/182.38
  6. Step 6: Final answer
    x = 165.73

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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.