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Finding the Fourth Proportional to 255.05, 351.84 and 208.46

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Solution

The fourth proportional to 255.05, 351.84 and 208.46 is: 287.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.05 : 351.84 = 208.46 : x
  2. Step 2: Convert to fraction form
    255.05/351.84 = 208.46/x
  3. Step 3: Cross multiply
    255.05x = 351.84 × 208.46
  4. Step 4: Simplify right side
    255.05x = 73,344.57
  5. Step 5: Solve for x
    x = 73,344.57/255.05
  6. Step 6: Final answer
    x = 287.57

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