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Finding the Third Proportional to 446.75 and 661.38

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Solution

The third proportional to 446.75 and 661.38 is: 979.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.75 : 661.38 = 661.38 : x
  2. Step 2: Convert to fraction form
    446.75/661.38 = 661.38/x
  3. Step 3: Cross multiply
    446.75x = 661.38 × 661.38
  4. Step 4: Simplify right side
    446.75x = 437,416.89
  5. Step 5: Solve for x
    x = 437,416.89/446.75
  6. Step 6: Final answer
    x = 979.11

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.