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Finding the Fourth Proportional to 490.61, 677.44 and 333.57

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Solution

The fourth proportional to 490.61, 677.44 and 333.57 is: 460.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.61 : 677.44 = 333.57 : x
  2. Step 2: Convert to fraction form
    490.61/677.44 = 333.57/x
  3. Step 3: Cross multiply
    490.61x = 677.44 × 333.57
  4. Step 4: Simplify right side
    490.61x = 225,971.87
  5. Step 5: Solve for x
    x = 225,971.87/490.61
  6. Step 6: Final answer
    x = 460.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.