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Finding the Fourth Proportional to 691.03, 953.67 and 396.37

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Solution

The fourth proportional to 691.03, 953.67 and 396.37 is: 547.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.03 : 953.67 = 396.37 : x
  2. Step 2: Convert to fraction form
    691.03/953.67 = 396.37/x
  3. Step 3: Cross multiply
    691.03x = 953.67 × 396.37
  4. Step 4: Simplify right side
    691.03x = 378,006.18
  5. Step 5: Solve for x
    x = 378,006.18/691.03
  6. Step 6: Final answer
    x = 547.02

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