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Finding the Fourth Proportional to 286.02, 428.91 and 157.62

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Solution

The fourth proportional to 286.02, 428.91 and 157.62 is: 236.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.02 : 428.91 = 157.62 : x
  2. Step 2: Convert to fraction form
    286.02/428.91 = 157.62/x
  3. Step 3: Cross multiply
    286.02x = 428.91 × 157.62
  4. Step 4: Simplify right side
    286.02x = 67,604.79
  5. Step 5: Solve for x
    x = 67,604.79/286.02
  6. Step 6: Final answer
    x = 236.36

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