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Finding the Third Proportional to 2.31 and 6.36

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Solution

The third proportional to 2.31 and 6.36 is: 17.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.31 : 6.36 = 6.36 : x
  2. Step 2: Convert to fraction form
    2.31/6.36 = 6.36/x
  3. Step 3: Cross multiply
    2.31x = 6.36 × 6.36
  4. Step 4: Simplify right side
    2.31x = 40.42
  5. Step 5: Solve for x
    x = 40.42/2.31
  6. Step 6: Final answer
    x = 17.48

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Why These Related Problems?

These problems maintain the same ratio (2.75) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.