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Finding the Third Proportional to 74.50 and 94.75

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Solution

The third proportional to 74.50 and 94.75 is: 120.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.50 : 94.75 = 94.75 : x
  2. Step 2: Convert to fraction form
    74.50/94.75 = 94.75/x
  3. Step 3: Cross multiply
    74.50x = 94.75 × 94.75
  4. Step 4: Simplify right side
    74.50x = 8,977.56
  5. Step 5: Solve for x
    x = 8,977.56/74.50
  6. Step 6: Final answer
    x = 120.50

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.