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Finding the Fourth Proportional to 322.07, 482.99 and 139.37

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Solution

The fourth proportional to 322.07, 482.99 and 139.37 is: 209.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.07 : 482.99 = 139.37 : x
  2. Step 2: Convert to fraction form
    322.07/482.99 = 139.37/x
  3. Step 3: Cross multiply
    322.07x = 482.99 × 139.37
  4. Step 4: Simplify right side
    322.07x = 67,311.20
  5. Step 5: Solve for x
    x = 67,311.20/322.07
  6. Step 6: Final answer
    x = 209.00

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