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Finding the Fourth Proportional to 498.23, 686.97 and 442.16

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Solution

The fourth proportional to 498.23, 686.97 and 442.16 is: 609.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.23 : 686.97 = 442.16 : x
  2. Step 2: Convert to fraction form
    498.23/686.97 = 442.16/x
  3. Step 3: Cross multiply
    498.23x = 686.97 × 442.16
  4. Step 4: Simplify right side
    498.23x = 303,750.66
  5. Step 5: Solve for x
    x = 303,750.66/498.23
  6. Step 6: Final answer
    x = 609.66

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