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Finding the Fourth Proportional to 403.62, 605.79 and 187.32

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Solution

The fourth proportional to 403.62, 605.79 and 187.32 is: 281.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.62 : 605.79 = 187.32 : x
  2. Step 2: Convert to fraction form
    403.62/605.79 = 187.32/x
  3. Step 3: Cross multiply
    403.62x = 605.79 × 187.32
  4. Step 4: Simplify right side
    403.62x = 113,476.58
  5. Step 5: Solve for x
    x = 113,476.58/403.62
  6. Step 6: Final answer
    x = 281.15

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