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Finding the Third Proportional to 4.15 and 8.84

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Solution

The third proportional to 4.15 and 8.84 is: 18.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.15 : 8.84 = 8.84 : x
  2. Step 2: Convert to fraction form
    4.15/8.84 = 8.84/x
  3. Step 3: Cross multiply
    4.15x = 8.84 × 8.84
  4. Step 4: Simplify right side
    4.15x = 78.14
  5. Step 5: Solve for x
    x = 78.14/4.15
  6. Step 6: Final answer
    x = 18.83

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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.