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Finding the Fourth Proportional to 495.43, 743.14 and 206.80

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Solution

The fourth proportional to 495.43, 743.14 and 206.80 is: 310.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.43 : 743.14 = 206.80 : x
  2. Step 2: Convert to fraction form
    495.43/743.14 = 206.80/x
  3. Step 3: Cross multiply
    495.43x = 743.14 × 206.80
  4. Step 4: Simplify right side
    495.43x = 153,681.35
  5. Step 5: Solve for x
    x = 153,681.35/495.43
  6. Step 6: Final answer
    x = 310.20

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