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Finding the Fourth Proportional to 348.24, 482.80 and 328.80

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Solution

The fourth proportional to 348.24, 482.80 and 328.80 is: 455.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.24 : 482.80 = 328.80 : x
  2. Step 2: Convert to fraction form
    348.24/482.80 = 328.80/x
  3. Step 3: Cross multiply
    348.24x = 482.80 × 328.80
  4. Step 4: Simplify right side
    348.24x = 158,744.64
  5. Step 5: Solve for x
    x = 158,744.64/348.24
  6. Step 6: Final answer
    x = 455.85

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