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Finding the Fourth Proportional to 273.41, 410.09 and 81.04

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Solution

The fourth proportional to 273.41, 410.09 and 81.04 is: 121.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.41 : 410.09 = 81.04 : x
  2. Step 2: Convert to fraction form
    273.41/410.09 = 81.04/x
  3. Step 3: Cross multiply
    273.41x = 410.09 × 81.04
  4. Step 4: Simplify right side
    273.41x = 33,233.69
  5. Step 5: Solve for x
    x = 33,233.69/273.41
  6. Step 6: Final answer
    x = 121.55

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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.