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Finding the Fourth Proportional to 419.27, 628.96 and 159.47

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Solution

The fourth proportional to 419.27, 628.96 and 159.47 is: 239.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    419.27 : 628.96 = 159.47 : x
  2. Step 2: Convert to fraction form
    419.27/628.96 = 159.47/x
  3. Step 3: Cross multiply
    419.27x = 628.96 × 159.47
  4. Step 4: Simplify right side
    419.27x = 100,299.07
  5. Step 5: Solve for x
    x = 100,299.07/419.27
  6. Step 6: Final answer
    x = 239.22

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