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Finding the Fourth Proportional to 578.04, 866.24 and 289.68

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Solution

The fourth proportional to 578.04, 866.24 and 289.68 is: 434.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.04 : 866.24 = 289.68 : x
  2. Step 2: Convert to fraction form
    578.04/866.24 = 289.68/x
  3. Step 3: Cross multiply
    578.04x = 866.24 × 289.68
  4. Step 4: Simplify right side
    578.04x = 250,932.40
  5. Step 5: Solve for x
    x = 250,932.40/578.04
  6. Step 6: Final answer
    x = 434.11

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