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Finding the Third Proportional to 406.27 and 945.21

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Solution

The third proportional to 406.27 and 945.21 is: 2,199.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    406.27 : 945.21 = 945.21 : x
  2. Step 2: Convert to fraction form
    406.27/945.21 = 945.21/x
  3. Step 3: Cross multiply
    406.27x = 945.21 × 945.21
  4. Step 4: Simplify right side
    406.27x = 893,423.72
  5. Step 5: Solve for x
    x = 893,423.72/406.27
  6. Step 6: Final answer
    x = 2,199.11

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Why These Related Problems?

These problems maintain the same ratio (2.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.