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Finding the Fourth Proportional to 381.84, 571.95 and 347.42

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Solution

The fourth proportional to 381.84, 571.95 and 347.42 is: 520.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.84 : 571.95 = 347.42 : x
  2. Step 2: Convert to fraction form
    381.84/571.95 = 347.42/x
  3. Step 3: Cross multiply
    381.84x = 571.95 × 347.42
  4. Step 4: Simplify right side
    381.84x = 198,704.01
  5. Step 5: Solve for x
    x = 198,704.01/381.84
  6. Step 6: Final answer
    x = 520.39

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