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Finding the Fourth Proportional to 498.62, 687.99 and 339.16

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Solution

The fourth proportional to 498.62, 687.99 and 339.16 is: 467.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.62 : 687.99 = 339.16 : x
  2. Step 2: Convert to fraction form
    498.62/687.99 = 339.16/x
  3. Step 3: Cross multiply
    498.62x = 687.99 × 339.16
  4. Step 4: Simplify right side
    498.62x = 233,338.69
  5. Step 5: Solve for x
    x = 233,338.69/498.62
  6. Step 6: Final answer
    x = 467.97

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