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Finding the Third Proportional to 338.63 and 743.63

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Solution

The third proportional to 338.63 and 743.63 is: 1,633.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.63 : 743.63 = 743.63 : x
  2. Step 2: Convert to fraction form
    338.63/743.63 = 743.63/x
  3. Step 3: Cross multiply
    338.63x = 743.63 × 743.63
  4. Step 4: Simplify right side
    338.63x = 552,978.14
  5. Step 5: Solve for x
    x = 552,978.14/338.63
  6. Step 6: Final answer
    x = 1,633.01

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.