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Finding the Third Proportional to 200.18 and 260.09

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Solution

The third proportional to 200.18 and 260.09 is: 337.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.18 : 260.09 = 260.09 : x
  2. Step 2: Convert to fraction form
    200.18/260.09 = 260.09/x
  3. Step 3: Cross multiply
    200.18x = 260.09 × 260.09
  4. Step 4: Simplify right side
    200.18x = 67,644.69
  5. Step 5: Solve for x
    x = 67,644.69/200.18
  6. Step 6: Final answer
    x = 337.92

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.