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Finding the Fourth Proportional to 183.13, 252.72 and 116.78

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Solution

The fourth proportional to 183.13, 252.72 and 116.78 is: 161.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    183.13 : 252.72 = 116.78 : x
  2. Step 2: Convert to fraction form
    183.13/252.72 = 116.78/x
  3. Step 3: Cross multiply
    183.13x = 252.72 × 116.78
  4. Step 4: Simplify right side
    183.13x = 29,511.38
  5. Step 5: Solve for x
    x = 29,511.38/183.13
  6. Step 6: Final answer
    x = 161.15

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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.