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Finding the Third Proportional to 155.25 and 340.88

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Solution

The third proportional to 155.25 and 340.88 is: 748.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.25 : 340.88 = 340.88 : x
  2. Step 2: Convert to fraction form
    155.25/340.88 = 340.88/x
  3. Step 3: Cross multiply
    155.25x = 340.88 × 340.88
  4. Step 4: Simplify right side
    155.25x = 116,195.77
  5. Step 5: Solve for x
    x = 116,195.77/155.25
  6. Step 6: Final answer
    x = 748.44

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.