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Finding the Fourth Proportional to 320.44, 480.06 and 198.76

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Solution

The fourth proportional to 320.44, 480.06 and 198.76 is: 297.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.44 : 480.06 = 198.76 : x
  2. Step 2: Convert to fraction form
    320.44/480.06 = 198.76/x
  3. Step 3: Cross multiply
    320.44x = 480.06 × 198.76
  4. Step 4: Simplify right side
    320.44x = 95,416.73
  5. Step 5: Solve for x
    x = 95,416.73/320.44
  6. Step 6: Final answer
    x = 297.77

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