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Finding the Fourth Proportional to 499.32, 749 and 191.32

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Solution

The fourth proportional to 499.32, 749 and 191.32 is: 286.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.32 : 749 = 191.32 : x
  2. Step 2: Convert to fraction form
    499.32/749 = 191.32/x
  3. Step 3: Cross multiply
    499.32x = 749 × 191.32
  4. Step 4: Simplify right side
    499.32x = 143,298.68
  5. Step 5: Solve for x
    x = 143,298.68/499.32
  6. Step 6: Final answer
    x = 286.99

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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.