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Finding the Fourth Proportional to 355.03, 490.16 and 271.98

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Solution

The fourth proportional to 355.03, 490.16 and 271.98 is: 375.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.03 : 490.16 = 271.98 : x
  2. Step 2: Convert to fraction form
    355.03/490.16 = 271.98/x
  3. Step 3: Cross multiply
    355.03x = 490.16 × 271.98
  4. Step 4: Simplify right side
    355.03x = 133,314.40
  5. Step 5: Solve for x
    x = 133,314.40/355.03
  6. Step 6: Final answer
    x = 375.50

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