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Finding the Fourth Proportional to 481.70, 723.39 and 262.22

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Solution

The fourth proportional to 481.70, 723.39 and 262.22 is: 393.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.70 : 723.39 = 262.22 : x
  2. Step 2: Convert to fraction form
    481.70/723.39 = 262.22/x
  3. Step 3: Cross multiply
    481.70x = 723.39 × 262.22
  4. Step 4: Simplify right side
    481.70x = 189,687.33
  5. Step 5: Solve for x
    x = 189,687.33/481.70
  6. Step 6: Final answer
    x = 393.79

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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.