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Finding the Third Proportional to 358.80 and 518.27

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Solution

The third proportional to 358.80 and 518.27 is: 748.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.80 : 518.27 = 518.27 : x
  2. Step 2: Convert to fraction form
    358.80/518.27 = 518.27/x
  3. Step 3: Cross multiply
    358.80x = 518.27 × 518.27
  4. Step 4: Simplify right side
    358.80x = 268,607.36
  5. Step 5: Solve for x
    x = 268,607.36/358.80
  6. Step 6: Final answer
    x = 748.62

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.