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Finding the Fourth Proportional to 490.39, 735.60 and 246.78

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Solution

The fourth proportional to 490.39, 735.60 and 246.78 is: 370.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.39 : 735.60 = 246.78 : x
  2. Step 2: Convert to fraction form
    490.39/735.60 = 246.78/x
  3. Step 3: Cross multiply
    490.39x = 735.60 × 246.78
  4. Step 4: Simplify right side
    490.39x = 181,530.13
  5. Step 5: Solve for x
    x = 181,530.13/490.39
  6. Step 6: Final answer
    x = 370.18

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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.