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Finding the Fourth Proportional to 479.61, 720.23 and 441.63

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Solution

The fourth proportional to 479.61, 720.23 and 441.63 is: 663.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.61 : 720.23 = 441.63 : x
  2. Step 2: Convert to fraction form
    479.61/720.23 = 441.63/x
  3. Step 3: Cross multiply
    479.61x = 720.23 × 441.63
  4. Step 4: Simplify right side
    479.61x = 318,072.97
  5. Step 5: Solve for x
    x = 318,072.97/479.61
  6. Step 6: Final answer
    x = 663.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.