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Finding the Fourth Proportional to 523.36, 721.24 and 375.74

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Solution

The fourth proportional to 523.36, 721.24 and 375.74 is: 517.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.36 : 721.24 = 375.74 : x
  2. Step 2: Convert to fraction form
    523.36/721.24 = 375.74/x
  3. Step 3: Cross multiply
    523.36x = 721.24 × 375.74
  4. Step 4: Simplify right side
    523.36x = 270,998.72
  5. Step 5: Solve for x
    x = 270,998.72/523.36
  6. Step 6: Final answer
    x = 517.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.