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Finding the Third Proportional to 8.90 and 17.79

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Solution

The third proportional to 8.90 and 17.79 is: 35.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8.90 : 17.79 = 17.79 : x
  2. Step 2: Convert to fraction form
    8.90/17.79 = 17.79/x
  3. Step 3: Cross multiply
    8.90x = 17.79 × 17.79
  4. Step 4: Simplify right side
    8.90x = 316.66
  5. Step 5: Solve for x
    x = 316.66/8.90
  6. Step 6: Final answer
    x = 35.59

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Why These Related Problems?

These problems maintain the same ratio (2.00) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.