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Finding the Third Proportional to 75.45 and 101.11

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Solution

The third proportional to 75.45 and 101.11 is: 135.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    75.45 : 101.11 = 101.11 : x
  2. Step 2: Convert to fraction form
    75.45/101.11 = 101.11/x
  3. Step 3: Cross multiply
    75.45x = 101.11 × 101.11
  4. Step 4: Simplify right side
    75.45x = 10,223.11
  5. Step 5: Solve for x
    x = 10,223.11/75.45
  6. Step 6: Final answer
    x = 135.50

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.