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Finding the Fourth Proportional to 182.13, 251.12 and 138.39

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Solution

The fourth proportional to 182.13, 251.12 and 138.39 is: 190.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.13 : 251.12 = 138.39 : x
  2. Step 2: Convert to fraction form
    182.13/251.12 = 138.39/x
  3. Step 3: Cross multiply
    182.13x = 251.12 × 138.39
  4. Step 4: Simplify right side
    182.13x = 34,751.24
  5. Step 5: Solve for x
    x = 34,751.24/182.13
  6. Step 6: Final answer
    x = 190.81

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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.