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Finding the Third Proportional to 107.13 and 235.31

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Solution

The third proportional to 107.13 and 235.31 is: 516.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.13 : 235.31 = 235.31 : x
  2. Step 2: Convert to fraction form
    107.13/235.31 = 235.31/x
  3. Step 3: Cross multiply
    107.13x = 235.31 × 235.31
  4. Step 4: Simplify right side
    107.13x = 55,371.97
  5. Step 5: Solve for x
    x = 55,371.97/107.13
  6. Step 6: Final answer
    x = 516.89

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.