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Finding the Fourth Proportional to 330, 455.63 and 219.60

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Solution

The fourth proportional to 330, 455.63 and 219.60 is: 303.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    330 : 455.63 = 219.60 : x
  2. Step 2: Convert to fraction form
    330/455.63 = 219.60/x
  3. Step 3: Cross multiply
    330x = 455.63 × 219.60
  4. Step 4: Simplify right side
    330x = 100,055.25
  5. Step 5: Solve for x
    x = 100,055.25/330
  6. Step 6: Final answer
    x = 303.20

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