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Finding the Fourth Proportional to 133.85, 200.79 and 65.45

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Solution

The fourth proportional to 133.85, 200.79 and 65.45 is: 98.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.85 : 200.79 = 65.45 : x
  2. Step 2: Convert to fraction form
    133.85/200.79 = 65.45/x
  3. Step 3: Cross multiply
    133.85x = 200.79 × 65.45
  4. Step 4: Simplify right side
    133.85x = 13,142.21
  5. Step 5: Solve for x
    x = 13,142.21/133.85
  6. Step 6: Final answer
    x = 98.18

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