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Finding the Fourth Proportional to 445.24, 613.15 and 443.89

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Solution

The fourth proportional to 445.24, 613.15 and 443.89 is: 611.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.24 : 613.15 = 443.89 : x
  2. Step 2: Convert to fraction form
    445.24/613.15 = 443.89/x
  3. Step 3: Cross multiply
    445.24x = 613.15 × 443.89
  4. Step 4: Simplify right side
    445.24x = 272,171.15
  5. Step 5: Solve for x
    x = 272,171.15/445.24
  6. Step 6: Final answer
    x = 611.29

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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.