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Finding the Fourth Proportional to 407.75, 611.63 and 119.19

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Solution

The fourth proportional to 407.75, 611.63 and 119.19 is: 178.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.75 : 611.63 = 119.19 : x
  2. Step 2: Convert to fraction form
    407.75/611.63 = 119.19/x
  3. Step 3: Cross multiply
    407.75x = 611.63 × 119.19
  4. Step 4: Simplify right side
    407.75x = 72,900.18
  5. Step 5: Solve for x
    x = 72,900.18/407.75
  6. Step 6: Final answer
    x = 178.79

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