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Finding the Fourth Proportional to 463.79, 695.68 and 139.15

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Solution

The fourth proportional to 463.79, 695.68 and 139.15 is: 208.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.79 : 695.68 = 139.15 : x
  2. Step 2: Convert to fraction form
    463.79/695.68 = 139.15/x
  3. Step 3: Cross multiply
    463.79x = 695.68 × 139.15
  4. Step 4: Simplify right side
    463.79x = 96,805.26
  5. Step 5: Solve for x
    x = 96,805.26/463.79
  6. Step 6: Final answer
    x = 208.73

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