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Finding the Fourth Proportional to 182.92, 274.42 and 74.79

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Solution

The fourth proportional to 182.92, 274.42 and 74.79 is: 112.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.92 : 274.42 = 74.79 : x
  2. Step 2: Convert to fraction form
    182.92/274.42 = 74.79/x
  3. Step 3: Cross multiply
    182.92x = 274.42 × 74.79
  4. Step 4: Simplify right side
    182.92x = 20,522.13
  5. Step 5: Solve for x
    x = 20,522.13/182.92
  6. Step 6: Final answer
    x = 112.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.