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Finding the Fourth Proportional to 550.48, 827.82 and 478.84

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Solution

The fourth proportional to 550.48, 827.82 and 478.84 is: 720.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.48 : 827.82 = 478.84 : x
  2. Step 2: Convert to fraction form
    550.48/827.82 = 478.84/x
  3. Step 3: Cross multiply
    550.48x = 827.82 × 478.84
  4. Step 4: Simplify right side
    550.48x = 396,393.33
  5. Step 5: Solve for x
    x = 396,393.33/550.48
  6. Step 6: Final answer
    x = 720.09

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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.