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Finding the Fourth Proportional to 363.78, 502.02 and 197.99

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Solution

The fourth proportional to 363.78, 502.02 and 197.99 is: 273.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.78 : 502.02 = 197.99 : x
  2. Step 2: Convert to fraction form
    363.78/502.02 = 197.99/x
  3. Step 3: Cross multiply
    363.78x = 502.02 × 197.99
  4. Step 4: Simplify right side
    363.78x = 99,392.43
  5. Step 5: Solve for x
    x = 99,392.43/363.78
  6. Step 6: Final answer
    x = 273.22

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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.