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Finding the Fourth Proportional to 490.09, 735.16 and 124.88

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Solution

The fourth proportional to 490.09, 735.16 and 124.88 is: 187.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.09 : 735.16 = 124.88 : x
  2. Step 2: Convert to fraction form
    490.09/735.16 = 124.88/x
  3. Step 3: Cross multiply
    490.09x = 735.16 × 124.88
  4. Step 4: Simplify right side
    490.09x = 91,806.78
  5. Step 5: Solve for x
    x = 91,806.78/490.09
  6. Step 6: Final answer
    x = 187.33

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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.