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Finding the Third Proportional to 141.13 and 305.38

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Solution

The third proportional to 141.13 and 305.38 is: 660.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.13 : 305.38 = 305.38 : x
  2. Step 2: Convert to fraction form
    141.13/305.38 = 305.38/x
  3. Step 3: Cross multiply
    141.13x = 305.38 × 305.38
  4. Step 4: Simplify right side
    141.13x = 93,253.89
  5. Step 5: Solve for x
    x = 93,253.89/141.13
  6. Step 6: Final answer
    x = 660.79

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.