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Finding the Fourth Proportional to 490.27, 735.22 and 143.52

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Solution

The fourth proportional to 490.27, 735.22 and 143.52 is: 215.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.27 : 735.22 = 143.52 : x
  2. Step 2: Convert to fraction form
    490.27/735.22 = 143.52/x
  3. Step 3: Cross multiply
    490.27x = 735.22 × 143.52
  4. Step 4: Simplify right side
    490.27x = 105,518.77
  5. Step 5: Solve for x
    x = 105,518.77/490.27
  6. Step 6: Final answer
    x = 215.23

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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.