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Finding the Fourth Proportional to 649.76, 896.67 and 355.04

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Solution

The fourth proportional to 649.76, 896.67 and 355.04 is: 489.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.76 : 896.67 = 355.04 : x
  2. Step 2: Convert to fraction form
    649.76/896.67 = 355.04/x
  3. Step 3: Cross multiply
    649.76x = 896.67 × 355.04
  4. Step 4: Simplify right side
    649.76x = 318,349.23
  5. Step 5: Solve for x
    x = 318,349.23/649.76
  6. Step 6: Final answer
    x = 489.95

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