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Finding the Fourth Proportional to 490.56, 735.84 and 148.48

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Solution

The fourth proportional to 490.56, 735.84 and 148.48 is: 222.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.56 : 735.84 = 148.48 : x
  2. Step 2: Convert to fraction form
    490.56/735.84 = 148.48/x
  3. Step 3: Cross multiply
    490.56x = 735.84 × 148.48
  4. Step 4: Simplify right side
    490.56x = 109,257.52
  5. Step 5: Solve for x
    x = 109,257.52/490.56
  6. Step 6: Final answer
    x = 222.72

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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.