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Finding the Third Proportional to 2.47 and 4.02

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Solution

The third proportional to 2.47 and 4.02 is: 6.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.47 : 4.02 = 4.02 : x
  2. Step 2: Convert to fraction form
    2.47/4.02 = 4.02/x
  3. Step 3: Cross multiply
    2.47x = 4.02 × 4.02
  4. Step 4: Simplify right side
    2.47x = 16.16
  5. Step 5: Solve for x
    x = 16.16/2.47
  6. Step 6: Final answer
    x = 6.53

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Why These Related Problems?

These problems maintain the same ratio (1.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.