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Finding the Third Proportional to 47.60 and 69.47

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Solution

The third proportional to 47.60 and 69.47 is: 101.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    47.60 : 69.47 = 69.47 : x
  2. Step 2: Convert to fraction form
    47.60/69.47 = 69.47/x
  3. Step 3: Cross multiply
    47.60x = 69.47 × 69.47
  4. Step 4: Simplify right side
    47.60x = 4,825.91
  5. Step 5: Solve for x
    x = 4,825.91/47.60
  6. Step 6: Final answer
    x = 101.38

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.