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Finding the Fourth Proportional to 638.08, 952.16 and 633.28

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Solution

The fourth proportional to 638.08, 952.16 and 633.28 is: 945.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    638.08 : 952.16 = 633.28 : x
  2. Step 2: Convert to fraction form
    638.08/952.16 = 633.28/x
  3. Step 3: Cross multiply
    638.08x = 952.16 × 633.28
  4. Step 4: Simplify right side
    638.08x = 602,983.88
  5. Step 5: Solve for x
    x = 602,983.88/638.08
  6. Step 6: Final answer
    x = 945.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.