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Finding the Fourth Proportional to 479.89, 660.87 and 450.23

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Solution

The fourth proportional to 479.89, 660.87 and 450.23 is: 620.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.89 : 660.87 = 450.23 : x
  2. Step 2: Convert to fraction form
    479.89/660.87 = 450.23/x
  3. Step 3: Cross multiply
    479.89x = 660.87 × 450.23
  4. Step 4: Simplify right side
    479.89x = 297,540.20
  5. Step 5: Solve for x
    x = 297,540.20/479.89
  6. Step 6: Final answer
    x = 620.02

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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.