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Finding the Fourth Proportional to 499.33, 749.33 and 191.44

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Solution

The fourth proportional to 499.33, 749.33 and 191.44 is: 287.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.33 : 749.33 = 191.44 : x
  2. Step 2: Convert to fraction form
    499.33/749.33 = 191.44/x
  3. Step 3: Cross multiply
    499.33x = 749.33 × 191.44
  4. Step 4: Simplify right side
    499.33x = 143,451.74
  5. Step 5: Solve for x
    x = 143,451.74/499.33
  6. Step 6: Final answer
    x = 287.29

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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.