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Finding the Third Proportional to 72.88 and 110.19

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Solution

The third proportional to 72.88 and 110.19 is: 166.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72.88 : 110.19 = 110.19 : x
  2. Step 2: Convert to fraction form
    72.88/110.19 = 110.19/x
  3. Step 3: Cross multiply
    72.88x = 110.19 × 110.19
  4. Step 4: Simplify right side
    72.88x = 12,141.29
  5. Step 5: Solve for x
    x = 12,141.29/72.88
  6. Step 6: Final answer
    x = 166.60

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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.