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Finding the Fourth Proportional to 248.55, 342.97 and 138.03

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Solution

The fourth proportional to 248.55, 342.97 and 138.03 is: 190.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.55 : 342.97 = 138.03 : x
  2. Step 2: Convert to fraction form
    248.55/342.97 = 138.03/x
  3. Step 3: Cross multiply
    248.55x = 342.97 × 138.03
  4. Step 4: Simplify right side
    248.55x = 47,340.15
  5. Step 5: Solve for x
    x = 47,340.15/248.55
  6. Step 6: Final answer
    x = 190.47

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