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Finding the Fourth Proportional to 722.82, 997.05 and 443.10

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Solution

The fourth proportional to 722.82, 997.05 and 443.10 is: 611.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.82 : 997.05 = 443.10 : x
  2. Step 2: Convert to fraction form
    722.82/997.05 = 443.10/x
  3. Step 3: Cross multiply
    722.82x = 997.05 × 443.10
  4. Step 4: Simplify right side
    722.82x = 441,792.86
  5. Step 5: Solve for x
    x = 441,792.86/722.82
  6. Step 6: Final answer
    x = 611.21

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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.