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Finding the Fourth Proportional to 490.80, 735.12 and 298.08

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Solution

The fourth proportional to 490.80, 735.12 and 298.08 is: 446.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.80 : 735.12 = 298.08 : x
  2. Step 2: Convert to fraction form
    490.80/735.12 = 298.08/x
  3. Step 3: Cross multiply
    490.80x = 735.12 × 298.08
  4. Step 4: Simplify right side
    490.80x = 219,124.57
  5. Step 5: Solve for x
    x = 219,124.57/490.80
  6. Step 6: Final answer
    x = 446.46

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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.