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Finding the Third Proportional to 579.38 and 897.19

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Solution

The third proportional to 579.38 and 897.19 is: 1,389.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.38 : 897.19 = 897.19 : x
  2. Step 2: Convert to fraction form
    579.38/897.19 = 897.19/x
  3. Step 3: Cross multiply
    579.38x = 897.19 × 897.19
  4. Step 4: Simplify right side
    579.38x = 804,945.41
  5. Step 5: Solve for x
    x = 804,945.41/579.38
  6. Step 6: Final answer
    x = 1,389.33

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.