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Finding the Fourth Proportional to 722.96, 1,082.92 and 671.07

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Solution

The fourth proportional to 722.96, 1,082.92 and 671.07 is: 1,005.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.96 : 1,082.92 = 671.07 : x
  2. Step 2: Convert to fraction form
    722.96/1,082.92 = 671.07/x
  3. Step 3: Cross multiply
    722.96x = 1,082.92 × 671.07
  4. Step 4: Simplify right side
    722.96x = 726,715.12
  5. Step 5: Solve for x
    x = 726,715.12/722.96
  6. Step 6: Final answer
    x = 1,005.19

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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.