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Finding the Third Proportional to 319.13 and 449.63

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Solution

The third proportional to 319.13 and 449.63 is: 633.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.13 : 449.63 = 449.63 : x
  2. Step 2: Convert to fraction form
    319.13/449.63 = 449.63/x
  3. Step 3: Cross multiply
    319.13x = 449.63 × 449.63
  4. Step 4: Simplify right side
    319.13x = 202,162.64
  5. Step 5: Solve for x
    x = 202,162.64/319.13
  6. Step 6: Final answer
    x = 633.49

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.