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Finding the Fourth Proportional to 564.95, 779.37 and 354.98

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Solution

The fourth proportional to 564.95, 779.37 and 354.98 is: 489.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.95 : 779.37 = 354.98 : x
  2. Step 2: Convert to fraction form
    564.95/779.37 = 354.98/x
  3. Step 3: Cross multiply
    564.95x = 779.37 × 354.98
  4. Step 4: Simplify right side
    564.95x = 276,656.87
  5. Step 5: Solve for x
    x = 276,656.87/564.95
  6. Step 6: Final answer
    x = 489.71

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