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Finding the Third Proportional to 354.66 and 520.03

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Solution

The third proportional to 354.66 and 520.03 is: 762.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.66 : 520.03 = 520.03 : x
  2. Step 2: Convert to fraction form
    354.66/520.03 = 520.03/x
  3. Step 3: Cross multiply
    354.66x = 520.03 × 520.03
  4. Step 4: Simplify right side
    354.66x = 270,432.50
  5. Step 5: Solve for x
    x = 270,432.50/354.66
  6. Step 6: Final answer
    x = 762.52

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.