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Finding the Fourth Proportional to 284.06, 391.91 and 173.42

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Solution

The fourth proportional to 284.06, 391.91 and 173.42 is: 239.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.06 : 391.91 = 173.42 : x
  2. Step 2: Convert to fraction form
    284.06/391.91 = 173.42/x
  3. Step 3: Cross multiply
    284.06x = 391.91 × 173.42
  4. Step 4: Simplify right side
    284.06x = 67,964.04
  5. Step 5: Solve for x
    x = 67,964.04/284.06
  6. Step 6: Final answer
    x = 239.26

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