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Finding the Fourth Proportional to 691.07, 1,037.12 and 325.97

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Solution

The fourth proportional to 691.07, 1,037.12 and 325.97 is: 489.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.07 : 1,037.12 = 325.97 : x
  2. Step 2: Convert to fraction form
    691.07/1,037.12 = 325.97/x
  3. Step 3: Cross multiply
    691.07x = 1,037.12 × 325.97
  4. Step 4: Simplify right side
    691.07x = 338,063.19
  5. Step 5: Solve for x
    x = 338,063.19/691.07
  6. Step 6: Final answer
    x = 489.19

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