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Finding the Fourth Proportional to 182.02, 251.20 and 126.78

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Solution

The fourth proportional to 182.02, 251.20 and 126.78 is: 174.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.02 : 251.20 = 126.78 : x
  2. Step 2: Convert to fraction form
    182.02/251.20 = 126.78/x
  3. Step 3: Cross multiply
    182.02x = 251.20 × 126.78
  4. Step 4: Simplify right side
    182.02x = 31,847.14
  5. Step 5: Solve for x
    x = 31,847.14/182.02
  6. Step 6: Final answer
    x = 174.97

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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.