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Finding the Fourth Proportional to 393.44, 593.92 and 379.26

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Solution

The fourth proportional to 393.44, 593.92 and 379.26 is: 572.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    393.44 : 593.92 = 379.26 : x
  2. Step 2: Convert to fraction form
    393.44/593.92 = 379.26/x
  3. Step 3: Cross multiply
    393.44x = 593.92 × 379.26
  4. Step 4: Simplify right side
    393.44x = 225,250.10
  5. Step 5: Solve for x
    x = 225,250.10/393.44
  6. Step 6: Final answer
    x = 572.51

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.