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Finding the Fourth Proportional to 521.01, 781.56 and 196.38

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Solution

The fourth proportional to 521.01, 781.56 and 196.38 is: 294.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.01 : 781.56 = 196.38 : x
  2. Step 2: Convert to fraction form
    521.01/781.56 = 196.38/x
  3. Step 3: Cross multiply
    521.01x = 781.56 × 196.38
  4. Step 4: Simplify right side
    521.01x = 153,482.75
  5. Step 5: Solve for x
    x = 153,482.75/521.01
  6. Step 6: Final answer
    x = 294.59

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