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Finding the Fourth Proportional to 394.83, 544.80 and 220.19

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Solution

The fourth proportional to 394.83, 544.80 and 220.19 is: 303.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.83 : 544.80 = 220.19 : x
  2. Step 2: Convert to fraction form
    394.83/544.80 = 220.19/x
  3. Step 3: Cross multiply
    394.83x = 544.80 × 220.19
  4. Step 4: Simplify right side
    394.83x = 119,956.79
  5. Step 5: Solve for x
    x = 119,956.79/394.83
  6. Step 6: Final answer
    x = 303.82

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