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Finding the Fourth Proportional to 490.23, 674.73 and 365.72

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Solution

The fourth proportional to 490.23, 674.73 and 365.72 is: 503.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.23 : 674.73 = 365.72 : x
  2. Step 2: Convert to fraction form
    490.23/674.73 = 365.72/x
  3. Step 3: Cross multiply
    490.23x = 674.73 × 365.72
  4. Step 4: Simplify right side
    490.23x = 246,758.88
  5. Step 5: Solve for x
    x = 246,758.88/490.23
  6. Step 6: Final answer
    x = 503.35

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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.