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Finding the Third Proportional to 6.66 and 11.35

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Solution

The third proportional to 6.66 and 11.35 is: 19.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6.66 : 11.35 = 11.35 : x
  2. Step 2: Convert to fraction form
    6.66/11.35 = 11.35/x
  3. Step 3: Cross multiply
    6.66x = 11.35 × 11.35
  4. Step 4: Simplify right side
    6.66x = 128.94
  5. Step 5: Solve for x
    x = 128.94/6.66
  6. Step 6: Final answer
    x = 19.36

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Why These Related Problems?

These problems maintain the same ratio (1.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.