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Finding the Fourth Proportional to 329.25, 454.17 and 198.24

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Solution

The fourth proportional to 329.25, 454.17 and 198.24 is: 273.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.25 : 454.17 = 198.24 : x
  2. Step 2: Convert to fraction form
    329.25/454.17 = 198.24/x
  3. Step 3: Cross multiply
    329.25x = 454.17 × 198.24
  4. Step 4: Simplify right side
    329.25x = 90,034.66
  5. Step 5: Solve for x
    x = 90,034.66/329.25
  6. Step 6: Final answer
    x = 273.45

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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.