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Finding the Fourth Proportional to 653.04, 978.46 and 396

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Solution

The fourth proportional to 653.04, 978.46 and 396 is: 593.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.04 : 978.46 = 396 : x
  2. Step 2: Convert to fraction form
    653.04/978.46 = 396/x
  3. Step 3: Cross multiply
    653.04x = 978.46 × 396
  4. Step 4: Simplify right side
    653.04x = 387,470.16
  5. Step 5: Solve for x
    x = 387,470.16/653.04
  6. Step 6: Final answer
    x = 593.33

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