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Finding the Fourth Proportional to 326.97, 451.20 and 179.58

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Solution

The fourth proportional to 326.97, 451.20 and 179.58 is: 247.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.97 : 451.20 = 179.58 : x
  2. Step 2: Convert to fraction form
    326.97/451.20 = 179.58/x
  3. Step 3: Cross multiply
    326.97x = 451.20 × 179.58
  4. Step 4: Simplify right side
    326.97x = 81,026.50
  5. Step 5: Solve for x
    x = 81,026.50/326.97
  6. Step 6: Final answer
    x = 247.81

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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.