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Finding the Third Proportional to 666.84 and 1,245.09

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Solution

The third proportional to 666.84 and 1,245.09 is: 2,324.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.84 : 1,245.09 = 1,245.09 : x
  2. Step 2: Convert to fraction form
    666.84/1,245.09 = 1,245.09/x
  3. Step 3: Cross multiply
    666.84x = 1,245.09 × 1,245.09
  4. Step 4: Simplify right side
    666.84x = 1,550,258.45
  5. Step 5: Solve for x
    x = 1,550,258.45/666.84
  6. Step 6: Final answer
    x = 2,324.77

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Why These Related Problems?

These problems maintain the same ratio (1.87) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.