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Finding the Fourth Proportional to 722.39, 996.84 and 411.89

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Solution

The fourth proportional to 722.39, 996.84 and 411.89 is: 568.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.39 : 996.84 = 411.89 : x
  2. Step 2: Convert to fraction form
    722.39/996.84 = 411.89/x
  3. Step 3: Cross multiply
    722.39x = 996.84 × 411.89
  4. Step 4: Simplify right side
    722.39x = 410,588.43
  5. Step 5: Solve for x
    x = 410,588.43/722.39
  6. Step 6: Final answer
    x = 568.38

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Half scale
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Double scale
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1.5x scale

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.