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Finding the Fourth Proportional to 419.45, 578.61 and 262.04

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Solution

The fourth proportional to 419.45, 578.61 and 262.04 is: 361.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    419.45 : 578.61 = 262.04 : x
  2. Step 2: Convert to fraction form
    419.45/578.61 = 262.04/x
  3. Step 3: Cross multiply
    419.45x = 578.61 × 262.04
  4. Step 4: Simplify right side
    419.45x = 151,618.96
  5. Step 5: Solve for x
    x = 151,618.96/419.45
  6. Step 6: Final answer
    x = 361.47

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