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Finding the Third Proportional to 200.39 and 299.53

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Solution

The third proportional to 200.39 and 299.53 is: 447.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.39 : 299.53 = 299.53 : x
  2. Step 2: Convert to fraction form
    200.39/299.53 = 299.53/x
  3. Step 3: Cross multiply
    200.39x = 299.53 × 299.53
  4. Step 4: Simplify right side
    200.39x = 89,718.97
  5. Step 5: Solve for x
    x = 89,718.97/200.39
  6. Step 6: Final answer
    x = 447.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.