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Finding the Fourth Proportional to 373.05, 515.30 and 286.79

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Solution

The fourth proportional to 373.05, 515.30 and 286.79 is: 396.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.05 : 515.30 = 286.79 : x
  2. Step 2: Convert to fraction form
    373.05/515.30 = 286.79/x
  3. Step 3: Cross multiply
    373.05x = 515.30 × 286.79
  4. Step 4: Simplify right side
    373.05x = 147,778.88
  5. Step 5: Solve for x
    x = 147,778.88/373.05
  6. Step 6: Final answer
    x = 396.14

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