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Finding the Fourth Proportional to 490.46, 735.53 and 259.22

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Solution

The fourth proportional to 490.46, 735.53 and 259.22 is: 388.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.46 : 735.53 = 259.22 : x
  2. Step 2: Convert to fraction form
    490.46/735.53 = 259.22/x
  3. Step 3: Cross multiply
    490.46x = 735.53 × 259.22
  4. Step 4: Simplify right side
    490.46x = 190,661.06
  5. Step 5: Solve for x
    x = 190,661.06/490.46
  6. Step 6: Final answer
    x = 388.74

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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.