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Finding the Fourth Proportional to 182.72, 252.15 and 112.79

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Solution

The fourth proportional to 182.72, 252.15 and 112.79 is: 155.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.72 : 252.15 = 112.79 : x
  2. Step 2: Convert to fraction form
    182.72/252.15 = 112.79/x
  3. Step 3: Cross multiply
    182.72x = 252.15 × 112.79
  4. Step 4: Simplify right side
    182.72x = 28,440.00
  5. Step 5: Solve for x
    x = 28,440.00/182.72
  6. Step 6: Final answer
    x = 155.65

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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.