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Finding the Fourth Proportional to 388.10, 582.42 and 144.84

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Solution

The fourth proportional to 388.10, 582.42 and 144.84 is: 217.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.10 : 582.42 = 144.84 : x
  2. Step 2: Convert to fraction form
    388.10/582.42 = 144.84/x
  3. Step 3: Cross multiply
    388.10x = 582.42 × 144.84
  4. Step 4: Simplify right side
    388.10x = 84,357.71
  5. Step 5: Solve for x
    x = 84,357.71/388.10
  6. Step 6: Final answer
    x = 217.36

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