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Finding the Fourth Proportional to 652, 978.48 and 395.68

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Solution

The fourth proportional to 652, 978.48 and 395.68 is: 593.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    652 : 978.48 = 395.68 : x
  2. Step 2: Convert to fraction form
    652/978.48 = 395.68/x
  3. Step 3: Cross multiply
    652x = 978.48 × 395.68
  4. Step 4: Simplify right side
    652x = 387,164.97
  5. Step 5: Solve for x
    x = 387,164.97/652
  6. Step 6: Final answer
    x = 593.81

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