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Finding the Fourth Proportional to 490.46, 736.70 and 472.23

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Solution

The fourth proportional to 490.46, 736.70 and 472.23 is: 709.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.46 : 736.70 = 472.23 : x
  2. Step 2: Convert to fraction form
    490.46/736.70 = 472.23/x
  3. Step 3: Cross multiply
    490.46x = 736.70 × 472.23
  4. Step 4: Simplify right side
    490.46x = 347,889.48
  5. Step 5: Solve for x
    x = 347,889.48/490.46
  6. Step 6: Final answer
    x = 709.32

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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.