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Finding the Fourth Proportional to 327.03, 489.58 and 211.13

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Solution

The fourth proportional to 327.03, 489.58 and 211.13 is: 316.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.03 : 489.58 = 211.13 : x
  2. Step 2: Convert to fraction form
    327.03/489.58 = 211.13/x
  3. Step 3: Cross multiply
    327.03x = 489.58 × 211.13
  4. Step 4: Simplify right side
    327.03x = 103,367.83
  5. Step 5: Solve for x
    x = 103,367.83/327.03
  6. Step 6: Final answer
    x = 316.08

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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.