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Finding the Fourth Proportional to 335.49, 502.16 and 198.20

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Solution

The fourth proportional to 335.49, 502.16 and 198.20 is: 296.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.49 : 502.16 = 198.20 : x
  2. Step 2: Convert to fraction form
    335.49/502.16 = 198.20/x
  3. Step 3: Cross multiply
    335.49x = 502.16 × 198.20
  4. Step 4: Simplify right side
    335.49x = 99,524.61
  5. Step 5: Solve for x
    x = 99,524.61/335.49
  6. Step 6: Final answer
    x = 296.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.