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Finding the Fourth Proportional to 180.96, 271.21 and 115.94

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Solution

The fourth proportional to 180.96, 271.21 and 115.94 is: 173.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.96 : 271.21 = 115.94 : x
  2. Step 2: Convert to fraction form
    180.96/271.21 = 115.94/x
  3. Step 3: Cross multiply
    180.96x = 271.21 × 115.94
  4. Step 4: Simplify right side
    180.96x = 31,442.73
  5. Step 5: Solve for x
    x = 31,442.73/180.96
  6. Step 6: Final answer
    x = 173.76

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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.