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Finding the Third Proportional to 313.88 and 450.56

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Solution

The third proportional to 313.88 and 450.56 is: 646.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.88 : 450.56 = 450.56 : x
  2. Step 2: Convert to fraction form
    313.88/450.56 = 450.56/x
  3. Step 3: Cross multiply
    313.88x = 450.56 × 450.56
  4. Step 4: Simplify right side
    313.88x = 203,006.57
  5. Step 5: Solve for x
    x = 203,006.57/313.88
  6. Step 6: Final answer
    x = 646.78

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.