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Finding the Third Proportional to 135.56 and 274.92

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Solution

The third proportional to 135.56 and 274.92 is: 557.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.56 : 274.92 = 274.92 : x
  2. Step 2: Convert to fraction form
    135.56/274.92 = 274.92/x
  3. Step 3: Cross multiply
    135.56x = 274.92 × 274.92
  4. Step 4: Simplify right side
    135.56x = 75,582.04
  5. Step 5: Solve for x
    x = 75,582.04/135.56
  6. Step 6: Final answer
    x = 557.54

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.