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Finding the Third Proportional to 60.80 and 140.60

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Solution

The third proportional to 60.80 and 140.60 is: 325.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.80 : 140.60 = 140.60 : x
  2. Step 2: Convert to fraction form
    60.80/140.60 = 140.60/x
  3. Step 3: Cross multiply
    60.80x = 140.60 × 140.60
  4. Step 4: Simplify right side
    60.80x = 19,768.80
  5. Step 5: Solve for x
    x = 19,768.80/60.80
  6. Step 6: Final answer
    x = 325.16

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.