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Finding the Fourth Proportional to 273.38, 409.97 and 119.30

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Solution

The fourth proportional to 273.38, 409.97 and 119.30 is: 178.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.38 : 409.97 = 119.30 : x
  2. Step 2: Convert to fraction form
    273.38/409.97 = 119.30/x
  3. Step 3: Cross multiply
    273.38x = 409.97 × 119.30
  4. Step 4: Simplify right side
    273.38x = 48,906.77
  5. Step 5: Solve for x
    x = 48,906.77/273.38
  6. Step 6: Final answer
    x = 178.90

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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.