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Finding the Third Proportional to 192.75 and 356.50

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Solution

The third proportional to 192.75 and 356.50 is: 659.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.75 : 356.50 = 356.50 : x
  2. Step 2: Convert to fraction form
    192.75/356.50 = 356.50/x
  3. Step 3: Cross multiply
    192.75x = 356.50 × 356.50
  4. Step 4: Simplify right side
    192.75x = 127,092.25
  5. Step 5: Solve for x
    x = 127,092.25/192.75
  6. Step 6: Final answer
    x = 659.36

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Why These Related Problems?

These problems maintain the same ratio (1.85) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.