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Finding the Fourth Proportional to 976.82, 1,467.97 and 490.22

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Solution

The fourth proportional to 976.82, 1,467.97 and 490.22 is: 736.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.82 : 1,467.97 = 490.22 : x
  2. Step 2: Convert to fraction form
    976.82/1,467.97 = 490.22/x
  3. Step 3: Cross multiply
    976.82x = 1,467.97 × 490.22
  4. Step 4: Simplify right side
    976.82x = 719,619.69
  5. Step 5: Solve for x
    x = 719,619.69/976.82
  6. Step 6: Final answer
    x = 736.69

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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.