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Finding the Fourth Proportional to 481.83, 723.54 and 265.56

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Solution

The fourth proportional to 481.83, 723.54 and 265.56 is: 398.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.83 : 723.54 = 265.56 : x
  2. Step 2: Convert to fraction form
    481.83/723.54 = 265.56/x
  3. Step 3: Cross multiply
    481.83x = 723.54 × 265.56
  4. Step 4: Simplify right side
    481.83x = 192,143.28
  5. Step 5: Solve for x
    x = 192,143.28/481.83
  6. Step 6: Final answer
    x = 398.78

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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.