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Finding the Fourth Proportional to 439.20, 657.92 and 246.72

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Solution

The fourth proportional to 439.20, 657.92 and 246.72 is: 369.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.20 : 657.92 = 246.72 : x
  2. Step 2: Convert to fraction form
    439.20/657.92 = 246.72/x
  3. Step 3: Cross multiply
    439.20x = 657.92 × 246.72
  4. Step 4: Simplify right side
    439.20x = 162,322.02
  5. Step 5: Solve for x
    x = 162,322.02/439.20
  6. Step 6: Final answer
    x = 369.59

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