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Finding the Third Proportional to 115.80 and 202.92

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Solution

The third proportional to 115.80 and 202.92 is: 355.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.80 : 202.92 = 202.92 : x
  2. Step 2: Convert to fraction form
    115.80/202.92 = 202.92/x
  3. Step 3: Cross multiply
    115.80x = 202.92 × 202.92
  4. Step 4: Simplify right side
    115.80x = 41,177.29
  5. Step 5: Solve for x
    x = 41,177.29/115.80
  6. Step 6: Final answer
    x = 355.58

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Why These Related Problems?

These problems maintain the same ratio (1.75) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.