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Finding the Fourth Proportional to 600.21, 827.64 and 489.33

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Solution

The fourth proportional to 600.21, 827.64 and 489.33 is: 674.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    600.21 : 827.64 = 489.33 : x
  2. Step 2: Convert to fraction form
    600.21/827.64 = 489.33/x
  3. Step 3: Cross multiply
    600.21x = 827.64 × 489.33
  4. Step 4: Simplify right side
    600.21x = 404,989.08
  5. Step 5: Solve for x
    x = 404,989.08/600.21
  6. Step 6: Final answer
    x = 674.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.