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Finding the Third Proportional to 112.48 and 156.62

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Solution

The third proportional to 112.48 and 156.62 is: 218.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    112.48 : 156.62 = 156.62 : x
  2. Step 2: Convert to fraction form
    112.48/156.62 = 156.62/x
  3. Step 3: Cross multiply
    112.48x = 156.62 × 156.62
  4. Step 4: Simplify right side
    112.48x = 24,530.17
  5. Step 5: Solve for x
    x = 24,530.17/112.48
  6. Step 6: Final answer
    x = 218.08

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.