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Finding the Fourth Proportional to 499.28, 749.25 and 225.50

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Solution

The fourth proportional to 499.28, 749.25 and 225.50 is: 338.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.28 : 749.25 = 225.50 : x
  2. Step 2: Convert to fraction form
    499.28/749.25 = 225.50/x
  3. Step 3: Cross multiply
    499.28x = 749.25 × 225.50
  4. Step 4: Simplify right side
    499.28x = 168,952.13
  5. Step 5: Solve for x
    x = 168,952.13/499.28
  6. Step 6: Final answer
    x = 338.39

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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.