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Finding the Third Proportional to 62.94 and 128.97

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Solution

The third proportional to 62.94 and 128.97 is: 264.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.94 : 128.97 = 128.97 : x
  2. Step 2: Convert to fraction form
    62.94/128.97 = 128.97/x
  3. Step 3: Cross multiply
    62.94x = 128.97 × 128.97
  4. Step 4: Simplify right side
    62.94x = 16,632.94
  5. Step 5: Solve for x
    x = 16,632.94/62.94
  6. Step 6: Final answer
    x = 264.28

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.