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Finding the Fourth Proportional to 490.74, 736.08 and 190.23

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Solution

The fourth proportional to 490.74, 736.08 and 190.23 is: 285.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.74 : 736.08 = 190.23 : x
  2. Step 2: Convert to fraction form
    490.74/736.08 = 190.23/x
  3. Step 3: Cross multiply
    490.74x = 736.08 × 190.23
  4. Step 4: Simplify right side
    490.74x = 140,024.50
  5. Step 5: Solve for x
    x = 140,024.50/490.74
  6. Step 6: Final answer
    x = 285.33

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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.