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Finding the Third Proportional to 353.63 and 398.63

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Solution

The third proportional to 353.63 and 398.63 is: 449.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.63 : 398.63 = 398.63 : x
  2. Step 2: Convert to fraction form
    353.63/398.63 = 398.63/x
  3. Step 3: Cross multiply
    353.63x = 398.63 × 398.63
  4. Step 4: Simplify right side
    353.63x = 158,901.89
  5. Step 5: Solve for x
    x = 158,901.89/353.63
  6. Step 6: Final answer
    x = 449.35

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Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.