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Finding the Fourth Proportional to 440.29, 660.02 and 403.84

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Solution

The fourth proportional to 440.29, 660.02 and 403.84 is: 605.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.29 : 660.02 = 403.84 : x
  2. Step 2: Convert to fraction form
    440.29/660.02 = 403.84/x
  3. Step 3: Cross multiply
    440.29x = 660.02 × 403.84
  4. Step 4: Simplify right side
    440.29x = 266,539.18
  5. Step 5: Solve for x
    x = 266,539.18/440.29
  6. Step 6: Final answer
    x = 605.38

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