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Finding the Fourth Proportional to 652.32, 978.84 and 396

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Solution

The fourth proportional to 652.32, 978.84 and 396 is: 594.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.32 : 978.84 = 396 : x
  2. Step 2: Convert to fraction form
    652.32/978.84 = 396/x
  3. Step 3: Cross multiply
    652.32x = 978.84 × 396
  4. Step 4: Simplify right side
    652.32x = 387,620.64
  5. Step 5: Solve for x
    x = 387,620.64/652.32
  6. Step 6: Final answer
    x = 594.22

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