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Finding the Fourth Proportional to 389.94, 584.30 and 368.08

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Solution

The fourth proportional to 389.94, 584.30 and 368.08 is: 551.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    389.94 : 584.30 = 368.08 : x
  2. Step 2: Convert to fraction form
    389.94/584.30 = 368.08/x
  3. Step 3: Cross multiply
    389.94x = 584.30 × 368.08
  4. Step 4: Simplify right side
    389.94x = 215,069.14
  5. Step 5: Solve for x
    x = 215,069.14/389.94
  6. Step 6: Final answer
    x = 551.54

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