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Finding the Third Proportional to 7.07 and 9.64

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Solution

The third proportional to 7.07 and 9.64 is: 13.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7.07 : 9.64 = 9.64 : x
  2. Step 2: Convert to fraction form
    7.07/9.64 = 9.64/x
  3. Step 3: Cross multiply
    7.07x = 9.64 × 9.64
  4. Step 4: Simplify right side
    7.07x = 92.96
  5. Step 5: Solve for x
    x = 92.96/7.07
  6. Step 6: Final answer
    x = 13.15

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.