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Finding the Third Proportional to 379.75 and 569.75

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Solution

The third proportional to 379.75 and 569.75 is: 854.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.75 : 569.75 = 569.75 : x
  2. Step 2: Convert to fraction form
    379.75/569.75 = 569.75/x
  3. Step 3: Cross multiply
    379.75x = 569.75 × 569.75
  4. Step 4: Simplify right side
    379.75x = 324,615.06
  5. Step 5: Solve for x
    x = 324,615.06/379.75
  6. Step 6: Final answer
    x = 854.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.