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Finding the Fourth Proportional to 499.33, 748.85 and 191.16

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Solution

The fourth proportional to 499.33, 748.85 and 191.16 is: 286.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.33 : 748.85 = 191.16 : x
  2. Step 2: Convert to fraction form
    499.33/748.85 = 191.16/x
  3. Step 3: Cross multiply
    499.33x = 748.85 × 191.16
  4. Step 4: Simplify right side
    499.33x = 143,149.23
  5. Step 5: Solve for x
    x = 143,149.23/499.33
  6. Step 6: Final answer
    x = 286.68

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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.