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Finding the Third Proportional to 339 and 921.56

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Solution

The third proportional to 339 and 921.56 is: 2,505.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    339 : 921.56 = 921.56 : x
  2. Step 2: Convert to fraction form
    339/921.56 = 921.56/x
  3. Step 3: Cross multiply
    339x = 921.56 × 921.56
  4. Step 4: Simplify right side
    339x = 849,277.44
  5. Step 5: Solve for x
    x = 849,277.44/339
  6. Step 6: Final answer
    x = 2,505.24

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Why These Related Problems?

These problems maintain the same ratio (2.72) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.