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Finding the Fourth Proportional to 322.20, 443.82 and 273.04

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Solution

The fourth proportional to 322.20, 443.82 and 273.04 is: 376.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.20 : 443.82 = 273.04 : x
  2. Step 2: Convert to fraction form
    322.20/443.82 = 273.04/x
  3. Step 3: Cross multiply
    322.20x = 443.82 × 273.04
  4. Step 4: Simplify right side
    322.20x = 121,180.61
  5. Step 5: Solve for x
    x = 121,180.61/322.20
  6. Step 6: Final answer
    x = 376.10

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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.