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Finding the Fourth Proportional to 445.05, 667.59 and 136.95

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Solution

The fourth proportional to 445.05, 667.59 and 136.95 is: 205.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.05 : 667.59 = 136.95 : x
  2. Step 2: Convert to fraction form
    445.05/667.59 = 136.95/x
  3. Step 3: Cross multiply
    445.05x = 667.59 × 136.95
  4. Step 4: Simplify right side
    445.05x = 91,423.43
  5. Step 5: Solve for x
    x = 91,423.43/445.05
  6. Step 6: Final answer
    x = 205.42

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