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Finding the Third Proportional to 84.80 and 180.98

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Solution

The third proportional to 84.80 and 180.98 is: 386.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    84.80 : 180.98 = 180.98 : x
  2. Step 2: Convert to fraction form
    84.80/180.98 = 180.98/x
  3. Step 3: Cross multiply
    84.80x = 180.98 × 180.98
  4. Step 4: Simplify right side
    84.80x = 32,755.34
  5. Step 5: Solve for x
    x = 32,755.34/84.80
  6. Step 6: Final answer
    x = 386.28

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.