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Finding the Fourth Proportional to 490.31, 733.70 and 426.06

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Solution

The fourth proportional to 490.31, 733.70 and 426.06 is: 637.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.31 : 733.70 = 426.06 : x
  2. Step 2: Convert to fraction form
    490.31/733.70 = 426.06/x
  3. Step 3: Cross multiply
    490.31x = 733.70 × 426.06
  4. Step 4: Simplify right side
    490.31x = 312,600.22
  5. Step 5: Solve for x
    x = 312,600.22/490.31
  6. Step 6: Final answer
    x = 637.56

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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.