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Finding the Third Proportional to 74 and 112

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Solution

The third proportional to 74 and 112 is: 169.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74 : 112 = 112 : x
  2. Step 2: Convert to fraction form
    74/112 = 112/x
  3. Step 3: Cross multiply
    74x = 112 × 112
  4. Step 4: Simplify right side
    74x = 12,544
  5. Step 5: Solve for x
    x = 12,544/74
  6. Step 6: Final answer
    x = 169.51

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.