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Finding the Third Proportional to 65.18 and 140.80

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Solution

The third proportional to 65.18 and 140.80 is: 304.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.18 : 140.80 = 140.80 : x
  2. Step 2: Convert to fraction form
    65.18/140.80 = 140.80/x
  3. Step 3: Cross multiply
    65.18x = 140.80 × 140.80
  4. Step 4: Simplify right side
    65.18x = 19,824.86
  5. Step 5: Solve for x
    x = 19,824.86/65.18
  6. Step 6: Final answer
    x = 304.16

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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.