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Finding the Fourth Proportional to 490.10, 735.15 and 165.47

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Solution

The fourth proportional to 490.10, 735.15 and 165.47 is: 248.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.10 : 735.15 = 165.47 : x
  2. Step 2: Convert to fraction form
    490.10/735.15 = 165.47/x
  3. Step 3: Cross multiply
    490.10x = 735.15 × 165.47
  4. Step 4: Simplify right side
    490.10x = 121,640.77
  5. Step 5: Solve for x
    x = 121,640.77/490.10
  6. Step 6: Final answer
    x = 248.20

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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.