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Finding the Fourth Proportional to 1,472.72, 2,032.25 and 843.21

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Solution

The fourth proportional to 1,472.72, 2,032.25 and 843.21 is: 1,163.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,472.72 : 2,032.25 = 843.21 : x
  2. Step 2: Convert to fraction form
    1,472.72/2,032.25 = 843.21/x
  3. Step 3: Cross multiply
    1,472.72x = 2,032.25 × 843.21
  4. Step 4: Simplify right side
    1,472.72x = 1,713,609.31
  5. Step 5: Solve for x
    x = 1,713,609.31/1,472.72
  6. Step 6: Final answer
    x = 1,163.57

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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.