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Finding the Fourth Proportional to 363.95, 502.23 and 198.15

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Solution

The fourth proportional to 363.95, 502.23 and 198.15 is: 273.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.95 : 502.23 = 198.15 : x
  2. Step 2: Convert to fraction form
    363.95/502.23 = 198.15/x
  3. Step 3: Cross multiply
    363.95x = 502.23 × 198.15
  4. Step 4: Simplify right side
    363.95x = 99,519.97
  5. Step 5: Solve for x
    x = 99,519.97/363.95
  6. Step 6: Final answer
    x = 273.44

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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.