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Finding the Fourth Proportional to 251.88, 377.71 and 89.57

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Solution

The fourth proportional to 251.88, 377.71 and 89.57 is: 134.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.88 : 377.71 = 89.57 : x
  2. Step 2: Convert to fraction form
    251.88/377.71 = 89.57/x
  3. Step 3: Cross multiply
    251.88x = 377.71 × 89.57
  4. Step 4: Simplify right side
    251.88x = 33,830.15
  5. Step 5: Solve for x
    x = 33,830.15/251.88
  6. Step 6: Final answer
    x = 134.31

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