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Finding the Fourth Proportional to 490.08, 681.06 and 483.96

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Solution

The fourth proportional to 490.08, 681.06 and 483.96 is: 672.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.08 : 681.06 = 483.96 : x
  2. Step 2: Convert to fraction form
    490.08/681.06 = 483.96/x
  3. Step 3: Cross multiply
    490.08x = 681.06 × 483.96
  4. Step 4: Simplify right side
    490.08x = 329,605.80
  5. Step 5: Solve for x
    x = 329,605.80/490.08
  6. Step 6: Final answer
    x = 672.56

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.