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Finding the Fourth Proportional to 490.48, 735.62 and 165.85

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Solution

The fourth proportional to 490.48, 735.62 and 165.85 is: 248.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.48 : 735.62 = 165.85 : x
  2. Step 2: Convert to fraction form
    490.48/735.62 = 165.85/x
  3. Step 3: Cross multiply
    490.48x = 735.62 × 165.85
  4. Step 4: Simplify right side
    490.48x = 122,002.58
  5. Step 5: Solve for x
    x = 122,002.58/490.48
  6. Step 6: Final answer
    x = 248.74

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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.