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Finding the Third Proportional to 112.75 and 187.13

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Solution

The third proportional to 112.75 and 187.13 is: 310.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    112.75 : 187.13 = 187.13 : x
  2. Step 2: Convert to fraction form
    112.75/187.13 = 187.13/x
  3. Step 3: Cross multiply
    112.75x = 187.13 × 187.13
  4. Step 4: Simplify right side
    112.75x = 35,015.77
  5. Step 5: Solve for x
    x = 35,015.77/112.75
  6. Step 6: Final answer
    x = 310.56

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.