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Finding the Third Proportional to 135.56 and 319.92

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Solution

The third proportional to 135.56 and 319.92 is: 755.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.56 : 319.92 = 319.92 : x
  2. Step 2: Convert to fraction form
    135.56/319.92 = 319.92/x
  3. Step 3: Cross multiply
    135.56x = 319.92 × 319.92
  4. Step 4: Simplify right side
    135.56x = 102,350.01
  5. Step 5: Solve for x
    x = 102,350.01/135.56
  6. Step 6: Final answer
    x = 755.00

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.