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Finding the Fourth Proportional to 481.34, 723.62 and 379.85

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Solution

The fourth proportional to 481.34, 723.62 and 379.85 is: 571.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.34 : 723.62 = 379.85 : x
  2. Step 2: Convert to fraction form
    481.34/723.62 = 379.85/x
  3. Step 3: Cross multiply
    481.34x = 723.62 × 379.85
  4. Step 4: Simplify right side
    481.34x = 274,862.25
  5. Step 5: Solve for x
    x = 274,862.25/481.34
  6. Step 6: Final answer
    x = 571.04

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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.