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Finding the Fourth Proportional to 490.35, 734.97 and 259.37

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Solution

The fourth proportional to 490.35, 734.97 and 259.37 is: 388.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.35 : 734.97 = 259.37 : x
  2. Step 2: Convert to fraction form
    490.35/734.97 = 259.37/x
  3. Step 3: Cross multiply
    490.35x = 734.97 × 259.37
  4. Step 4: Simplify right side
    490.35x = 190,629.22
  5. Step 5: Solve for x
    x = 190,629.22/490.35
  6. Step 6: Final answer
    x = 388.76

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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.