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Finding the Fourth Proportional to 646.34, 969 and 321.48

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Solution

The fourth proportional to 646.34, 969 and 321.48 is: 481.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.34 : 969 = 321.48 : x
  2. Step 2: Convert to fraction form
    646.34/969 = 321.48/x
  3. Step 3: Cross multiply
    646.34x = 969 × 321.48
  4. Step 4: Simplify right side
    646.34x = 311,514.12
  5. Step 5: Solve for x
    x = 311,514.12/646.34
  6. Step 6: Final answer
    x = 481.97

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