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Finding the Fourth Proportional to 490.98, 677.18 and 333.75

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Solution

The fourth proportional to 490.98, 677.18 and 333.75 is: 460.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.98 : 677.18 = 333.75 : x
  2. Step 2: Convert to fraction form
    490.98/677.18 = 333.75/x
  3. Step 3: Cross multiply
    490.98x = 677.18 × 333.75
  4. Step 4: Simplify right side
    490.98x = 226,008.83
  5. Step 5: Solve for x
    x = 226,008.83/490.98
  6. Step 6: Final answer
    x = 460.32

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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.