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Finding the Fourth Proportional to 429.56, 642.97 and 363.95

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Solution

The fourth proportional to 429.56, 642.97 and 363.95 is: 544.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.56 : 642.97 = 363.95 : x
  2. Step 2: Convert to fraction form
    429.56/642.97 = 363.95/x
  3. Step 3: Cross multiply
    429.56x = 642.97 × 363.95
  4. Step 4: Simplify right side
    429.56x = 234,008.58
  5. Step 5: Solve for x
    x = 234,008.58/429.56
  6. Step 6: Final answer
    x = 544.77

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