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Finding the Third Proportional to 406.75 and 964.38

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Solution

The third proportional to 406.75 and 964.38 is: 2,286.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    406.75 : 964.38 = 964.38 : x
  2. Step 2: Convert to fraction form
    406.75/964.38 = 964.38/x
  3. Step 3: Cross multiply
    406.75x = 964.38 × 964.38
  4. Step 4: Simplify right side
    406.75x = 930,019.14
  5. Step 5: Solve for x
    x = 930,019.14/406.75
  6. Step 6: Final answer
    x = 2,286.46

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Why These Related Problems?

These problems maintain the same ratio (2.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.