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Finding the Fourth Proportional to 489.27, 733.54 and 211.33

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Solution

The fourth proportional to 489.27, 733.54 and 211.33 is: 316.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.27 : 733.54 = 211.33 : x
  2. Step 2: Convert to fraction form
    489.27/733.54 = 211.33/x
  3. Step 3: Cross multiply
    489.27x = 733.54 × 211.33
  4. Step 4: Simplify right side
    489.27x = 155,019.01
  5. Step 5: Solve for x
    x = 155,019.01/489.27
  6. Step 6: Final answer
    x = 316.84

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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.