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Finding the Fourth Proportional to 192, 287.44 and 130.72

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Solution

The fourth proportional to 192, 287.44 and 130.72 is: 195.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    192 : 287.44 = 130.72 : x
  2. Step 2: Convert to fraction form
    192/287.44 = 130.72/x
  3. Step 3: Cross multiply
    192x = 287.44 × 130.72
  4. Step 4: Simplify right side
    192x = 37,574.16
  5. Step 5: Solve for x
    x = 37,574.16/192
  6. Step 6: Final answer
    x = 195.70

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