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Finding the Fourth Proportional to 490.80, 672.91 and 482.03

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Solution

The fourth proportional to 490.80, 672.91 and 482.03 is: 660.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.80 : 672.91 = 482.03 : x
  2. Step 2: Convert to fraction form
    490.80/672.91 = 482.03/x
  3. Step 3: Cross multiply
    490.80x = 672.91 × 482.03
  4. Step 4: Simplify right side
    490.80x = 324,360.76
  5. Step 5: Solve for x
    x = 324,360.76/490.80
  6. Step 6: Final answer
    x = 660.88

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.