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Finding the Fourth Proportional to 499.21, 749.04 and 190.96

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Solution

The fourth proportional to 499.21, 749.04 and 190.96 is: 286.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.21 : 749.04 = 190.96 : x
  2. Step 2: Convert to fraction form
    499.21/749.04 = 190.96/x
  3. Step 3: Cross multiply
    499.21x = 749.04 × 190.96
  4. Step 4: Simplify right side
    499.21x = 143,034.81
  5. Step 5: Solve for x
    x = 143,034.81/499.21
  6. Step 6: Final answer
    x = 286.52

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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.