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Finding the Fourth Proportional to 326.97, 451.21 and 179.60

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Solution

The fourth proportional to 326.97, 451.21 and 179.60 is: 247.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.97 : 451.21 = 179.60 : x
  2. Step 2: Convert to fraction form
    326.97/451.21 = 179.60/x
  3. Step 3: Cross multiply
    326.97x = 451.21 × 179.60
  4. Step 4: Simplify right side
    326.97x = 81,039.71
  5. Step 5: Solve for x
    x = 81,039.71/326.97
  6. Step 6: Final answer
    x = 247.85

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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.