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Finding the Fourth Proportional to 493.44, 740.40 and 219.72

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Solution

The fourth proportional to 493.44, 740.40 and 219.72 is: 329.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.44 : 740.40 = 219.72 : x
  2. Step 2: Convert to fraction form
    493.44/740.40 = 219.72/x
  3. Step 3: Cross multiply
    493.44x = 740.40 × 219.72
  4. Step 4: Simplify right side
    493.44x = 162,680.69
  5. Step 5: Solve for x
    x = 162,680.69/493.44
  6. Step 6: Final answer
    x = 329.69

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