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Finding the Fourth Proportional to 327.75, 492.38 and 225.08

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Solution

The fourth proportional to 327.75, 492.38 and 225.08 is: 338.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.75 : 492.38 = 225.08 : x
  2. Step 2: Convert to fraction form
    327.75/492.38 = 225.08/x
  3. Step 3: Cross multiply
    327.75x = 492.38 × 225.08
  4. Step 4: Simplify right side
    327.75x = 110,823.99
  5. Step 5: Solve for x
    x = 110,823.99/327.75
  6. Step 6: Final answer
    x = 338.14

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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.