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Finding the Fourth Proportional to 327.02, 489.98 and 217.08

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Solution

The fourth proportional to 327.02, 489.98 and 217.08 is: 325.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.02 : 489.98 = 217.08 : x
  2. Step 2: Convert to fraction form
    327.02/489.98 = 217.08/x
  3. Step 3: Cross multiply
    327.02x = 489.98 × 217.08
  4. Step 4: Simplify right side
    327.02x = 106,365.40
  5. Step 5: Solve for x
    x = 106,365.40/327.02
  6. Step 6: Final answer
    x = 325.26

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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.