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Finding the Third Proportional to 64.69 and 95.20

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Solution

The third proportional to 64.69 and 95.20 is: 140.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.69 : 95.20 = 95.20 : x
  2. Step 2: Convert to fraction form
    64.69/95.20 = 95.20/x
  3. Step 3: Cross multiply
    64.69x = 95.20 × 95.20
  4. Step 4: Simplify right side
    64.69x = 9,063.64
  5. Step 5: Solve for x
    x = 9,063.64/64.69
  6. Step 6: Final answer
    x = 140.11

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.