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Finding the Fourth Proportional to 575.17, 863.27 and 379.63

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Solution

The fourth proportional to 575.17, 863.27 and 379.63 is: 569.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.17 : 863.27 = 379.63 : x
  2. Step 2: Convert to fraction form
    575.17/863.27 = 379.63/x
  3. Step 3: Cross multiply
    575.17x = 863.27 × 379.63
  4. Step 4: Simplify right side
    575.17x = 327,721.29
  5. Step 5: Solve for x
    x = 327,721.29/575.17
  6. Step 6: Final answer
    x = 569.78

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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.