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Finding the Fourth Proportional to 324.17, 447.29 and 198.03

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Solution

The fourth proportional to 324.17, 447.29 and 198.03 is: 273.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.17 : 447.29 = 198.03 : x
  2. Step 2: Convert to fraction form
    324.17/447.29 = 198.03/x
  3. Step 3: Cross multiply
    324.17x = 447.29 × 198.03
  4. Step 4: Simplify right side
    324.17x = 88,575.85
  5. Step 5: Solve for x
    x = 88,575.85/324.17
  6. Step 6: Final answer
    x = 273.24

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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.