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Finding the Fourth Proportional to 481.82, 723.13 and 379.55

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Solution

The fourth proportional to 481.82, 723.13 and 379.55 is: 569.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.82 : 723.13 = 379.55 : x
  2. Step 2: Convert to fraction form
    481.82/723.13 = 379.55/x
  3. Step 3: Cross multiply
    481.82x = 723.13 × 379.55
  4. Step 4: Simplify right side
    481.82x = 274,464.85
  5. Step 5: Solve for x
    x = 274,464.85/481.82
  6. Step 6: Final answer
    x = 569.65

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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.