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Finding the Fourth Proportional to 646.96, 893 and 440.08

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Solution

The fourth proportional to 646.96, 893 and 440.08 is: 607.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.96 : 893 = 440.08 : x
  2. Step 2: Convert to fraction form
    646.96/893 = 440.08/x
  3. Step 3: Cross multiply
    646.96x = 893 × 440.08
  4. Step 4: Simplify right side
    646.96x = 392,991.44
  5. Step 5: Solve for x
    x = 392,991.44/646.96
  6. Step 6: Final answer
    x = 607.44

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