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Finding the Third Proportional to 3.12 and 5.90

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Solution

The third proportional to 3.12 and 5.90 is: 11.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.12 : 5.90 = 5.90 : x
  2. Step 2: Convert to fraction form
    3.12/5.90 = 5.90/x
  3. Step 3: Cross multiply
    3.12x = 5.90 × 5.90
  4. Step 4: Simplify right side
    3.12x = 34.83
  5. Step 5: Solve for x
    x = 34.83/3.12
  6. Step 6: Final answer
    x = 11.15

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Why These Related Problems?

These problems maintain the same ratio (1.89) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.