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Finding the Fourth Proportional to 523.08, 721.86 and 375.96

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Solution

The fourth proportional to 523.08, 721.86 and 375.96 is: 518.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.08 : 721.86 = 375.96 : x
  2. Step 2: Convert to fraction form
    523.08/721.86 = 375.96/x
  3. Step 3: Cross multiply
    523.08x = 721.86 × 375.96
  4. Step 4: Simplify right side
    523.08x = 271,390.49
  5. Step 5: Solve for x
    x = 271,390.49/523.08
  6. Step 6: Final answer
    x = 518.83

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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.