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Finding the Fourth Proportional to 490.71, 677.71 and 333.77

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Solution

The fourth proportional to 490.71, 677.71 and 333.77 is: 460.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.71 : 677.71 = 333.77 : x
  2. Step 2: Convert to fraction form
    490.71/677.71 = 333.77/x
  3. Step 3: Cross multiply
    490.71x = 677.71 × 333.77
  4. Step 4: Simplify right side
    490.71x = 226,203.07
  5. Step 5: Solve for x
    x = 226,203.07/490.71
  6. Step 6: Final answer
    x = 460.97

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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.