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Finding the Fourth Proportional to 665.55, 998.37 and 254.63

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Solution

The fourth proportional to 665.55, 998.37 and 254.63 is: 381.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.55 : 998.37 = 254.63 : x
  2. Step 2: Convert to fraction form
    665.55/998.37 = 254.63/x
  3. Step 3: Cross multiply
    665.55x = 998.37 × 254.63
  4. Step 4: Simplify right side
    665.55x = 254,217.45
  5. Step 5: Solve for x
    x = 254,217.45/665.55
  6. Step 6: Final answer
    x = 381.97

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