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Finding the Fourth Proportional to 364.78, 546.09 and 220.06

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Solution

The fourth proportional to 364.78, 546.09 and 220.06 is: 329.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.78 : 546.09 = 220.06 : x
  2. Step 2: Convert to fraction form
    364.78/546.09 = 220.06/x
  3. Step 3: Cross multiply
    364.78x = 546.09 × 220.06
  4. Step 4: Simplify right side
    364.78x = 120,172.57
  5. Step 5: Solve for x
    x = 120,172.57/364.78
  6. Step 6: Final answer
    x = 329.44

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