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Finding the Third Proportional to 163.31 and 339.94

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Solution

The third proportional to 163.31 and 339.94 is: 707.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.31 : 339.94 = 339.94 : x
  2. Step 2: Convert to fraction form
    163.31/339.94 = 339.94/x
  3. Step 3: Cross multiply
    163.31x = 339.94 × 339.94
  4. Step 4: Simplify right side
    163.31x = 115,557.50
  5. Step 5: Solve for x
    x = 115,557.50/163.31
  6. Step 6: Final answer
    x = 707.59

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.