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Finding the Fourth Proportional to 329.78, 454.63 and 224.70

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Solution

The fourth proportional to 329.78, 454.63 and 224.70 is: 309.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.78 : 454.63 = 224.70 : x
  2. Step 2: Convert to fraction form
    329.78/454.63 = 224.70/x
  3. Step 3: Cross multiply
    329.78x = 454.63 × 224.70
  4. Step 4: Simplify right side
    329.78x = 102,155.36
  5. Step 5: Solve for x
    x = 102,155.36/329.78
  6. Step 6: Final answer
    x = 309.77

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