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Finding the Third Proportional to 3.43 and 7.40

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Solution

The third proportional to 3.43 and 7.40 is: 15.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.43 : 7.40 = 7.40 : x
  2. Step 2: Convert to fraction form
    3.43/7.40 = 7.40/x
  3. Step 3: Cross multiply
    3.43x = 7.40 × 7.40
  4. Step 4: Simplify right side
    3.43x = 54.77
  5. Step 5: Solve for x
    x = 54.77/3.43
  6. Step 6: Final answer
    x = 15.96

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.