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Finding the Fourth Proportional to 490.88, 677.61 and 366.74

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Solution

The fourth proportional to 490.88, 677.61 and 366.74 is: 506.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.88 : 677.61 = 366.74 : x
  2. Step 2: Convert to fraction form
    490.88/677.61 = 366.74/x
  3. Step 3: Cross multiply
    490.88x = 677.61 × 366.74
  4. Step 4: Simplify right side
    490.88x = 248,506.69
  5. Step 5: Solve for x
    x = 248,506.69/490.88
  6. Step 6: Final answer
    x = 506.25

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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.