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Finding the Third Proportional to 351.38 and 558.47

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Solution

The third proportional to 351.38 and 558.47 is: 887.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.38 : 558.47 = 558.47 : x
  2. Step 2: Convert to fraction form
    351.38/558.47 = 558.47/x
  3. Step 3: Cross multiply
    351.38x = 558.47 × 558.47
  4. Step 4: Simplify right side
    351.38x = 311,887.34
  5. Step 5: Solve for x
    x = 311,887.34/351.38
  6. Step 6: Final answer
    x = 887.62

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.