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Finding the Fourth Proportional to 663.36, 995.04 and 549.12

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Solution

The fourth proportional to 663.36, 995.04 and 549.12 is: 823.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.36 : 995.04 = 549.12 : x
  2. Step 2: Convert to fraction form
    663.36/995.04 = 549.12/x
  3. Step 3: Cross multiply
    663.36x = 995.04 × 549.12
  4. Step 4: Simplify right side
    663.36x = 546,396.36
  5. Step 5: Solve for x
    x = 546,396.36/663.36
  6. Step 6: Final answer
    x = 823.68

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