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Finding the Fourth Proportional to 273.68, 410.48 and 91.22

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Solution

The fourth proportional to 273.68, 410.48 and 91.22 is: 136.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.68 : 410.48 = 91.22 : x
  2. Step 2: Convert to fraction form
    273.68/410.48 = 91.22/x
  3. Step 3: Cross multiply
    273.68x = 410.48 × 91.22
  4. Step 4: Simplify right side
    273.68x = 37,443.99
  5. Step 5: Solve for x
    x = 37,443.99/273.68
  6. Step 6: Final answer
    x = 136.82

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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.