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Finding the Fourth Proportional to 490.83, 738 and 448.89

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Solution

The fourth proportional to 490.83, 738 and 448.89 is: 674.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.83 : 738 = 448.89 : x
  2. Step 2: Convert to fraction form
    490.83/738 = 448.89/x
  3. Step 3: Cross multiply
    490.83x = 738 × 448.89
  4. Step 4: Simplify right side
    490.83x = 331,280.82
  5. Step 5: Solve for x
    x = 331,280.82/490.83
  6. Step 6: Final answer
    x = 674.94

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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.