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Finding the Third Proportional to 339.94 and 512.44

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Solution

The third proportional to 339.94 and 512.44 is: 772.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.94 : 512.44 = 512.44 : x
  2. Step 2: Convert to fraction form
    339.94/512.44 = 512.44/x
  3. Step 3: Cross multiply
    339.94x = 512.44 × 512.44
  4. Step 4: Simplify right side
    339.94x = 262,592.19
  5. Step 5: Solve for x
    x = 262,592.19/339.94
  6. Step 6: Final answer
    x = 772.47

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.