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Finding the Fourth Proportional to 722.73, 997.44 and 408.06

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Solution

The fourth proportional to 722.73, 997.44 and 408.06 is: 563.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.73 : 997.44 = 408.06 : x
  2. Step 2: Convert to fraction form
    722.73/997.44 = 408.06/x
  3. Step 3: Cross multiply
    722.73x = 997.44 × 408.06
  4. Step 4: Simplify right side
    722.73x = 407,015.37
  5. Step 5: Solve for x
    x = 407,015.37/722.73
  6. Step 6: Final answer
    x = 563.16

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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.