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Finding the Fourth Proportional to 499.46, 749.34 and 191.32

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Solution

The fourth proportional to 499.46, 749.34 and 191.32 is: 287.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.46 : 749.34 = 191.32 : x
  2. Step 2: Convert to fraction form
    499.46/749.34 = 191.32/x
  3. Step 3: Cross multiply
    499.46x = 749.34 × 191.32
  4. Step 4: Simplify right side
    499.46x = 143,363.73
  5. Step 5: Solve for x
    x = 143,363.73/499.46
  6. Step 6: Final answer
    x = 287.04

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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.