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Finding the Fourth Proportional to 582.80, 873.99 and 217.55

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Solution

The fourth proportional to 582.80, 873.99 and 217.55 is: 326.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.80 : 873.99 = 217.55 : x
  2. Step 2: Convert to fraction form
    582.80/873.99 = 217.55/x
  3. Step 3: Cross multiply
    582.80x = 873.99 × 217.55
  4. Step 4: Simplify right side
    582.80x = 190,138.71
  5. Step 5: Solve for x
    x = 190,138.71/582.80
  6. Step 6: Final answer
    x = 326.25

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