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Finding the Fourth Proportional to 490.37, 735.49 and 125.16

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Solution

The fourth proportional to 490.37, 735.49 and 125.16 is: 187.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.37 : 735.49 = 125.16 : x
  2. Step 2: Convert to fraction form
    490.37/735.49 = 125.16/x
  3. Step 3: Cross multiply
    490.37x = 735.49 × 125.16
  4. Step 4: Simplify right side
    490.37x = 92,053.30
  5. Step 5: Solve for x
    x = 92,053.30/490.37
  6. Step 6: Final answer
    x = 187.72

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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.