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Finding the Third Proportional to 666.56 and 1,476.56

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Solution

The third proportional to 666.56 and 1,476.56 is: 3,270.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.56 : 1,476.56 = 1,476.56 : x
  2. Step 2: Convert to fraction form
    666.56/1,476.56 = 1,476.56/x
  3. Step 3: Cross multiply
    666.56x = 1,476.56 × 1,476.56
  4. Step 4: Simplify right side
    666.56x = 2,180,236.82
  5. Step 5: Solve for x
    x = 2,180,236.82/666.56
  6. Step 6: Final answer
    x = 3,270.87

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.