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Finding the Fourth Proportional to 633.12, 949.56 and 200.28

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Solution

The fourth proportional to 633.12, 949.56 and 200.28 is: 300.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.12 : 949.56 = 200.28 : x
  2. Step 2: Convert to fraction form
    633.12/949.56 = 200.28/x
  3. Step 3: Cross multiply
    633.12x = 949.56 × 200.28
  4. Step 4: Simplify right side
    633.12x = 190,177.88
  5. Step 5: Solve for x
    x = 190,177.88/633.12
  6. Step 6: Final answer
    x = 300.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.