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Finding the Fourth Proportional to 286.78, 395.88 and 183.28

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Solution

The fourth proportional to 286.78, 395.88 and 183.28 is: 253.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.78 : 395.88 = 183.28 : x
  2. Step 2: Convert to fraction form
    286.78/395.88 = 183.28/x
  3. Step 3: Cross multiply
    286.78x = 395.88 × 183.28
  4. Step 4: Simplify right side
    286.78x = 72,556.89
  5. Step 5: Solve for x
    x = 72,556.89/286.78
  6. Step 6: Final answer
    x = 253.01

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