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Finding the Fourth Proportional to 494.08, 681.62 and 316.98

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Solution

The fourth proportional to 494.08, 681.62 and 316.98 is: 437.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.08 : 681.62 = 316.98 : x
  2. Step 2: Convert to fraction form
    494.08/681.62 = 316.98/x
  3. Step 3: Cross multiply
    494.08x = 681.62 × 316.98
  4. Step 4: Simplify right side
    494.08x = 216,058.32
  5. Step 5: Solve for x
    x = 216,058.32/494.08
  6. Step 6: Final answer
    x = 437.30

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