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Finding the Fourth Proportional to 182.85, 252.21 and 139.11

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Solution

The fourth proportional to 182.85, 252.21 and 139.11 is: 191.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.85 : 252.21 = 139.11 : x
  2. Step 2: Convert to fraction form
    182.85/252.21 = 139.11/x
  3. Step 3: Cross multiply
    182.85x = 252.21 × 139.11
  4. Step 4: Simplify right side
    182.85x = 35,084.93
  5. Step 5: Solve for x
    x = 35,084.93/182.85
  6. Step 6: Final answer
    x = 191.88

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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.