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Finding the Fourth Proportional to 1,372.72, 2,059.10 and 448.27

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Solution

The fourth proportional to 1,372.72, 2,059.10 and 448.27 is: 672.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.72 : 2,059.10 = 448.27 : x
  2. Step 2: Convert to fraction form
    1,372.72/2,059.10 = 448.27/x
  3. Step 3: Cross multiply
    1,372.72x = 2,059.10 × 448.27
  4. Step 4: Simplify right side
    1,372.72x = 923,032.76
  5. Step 5: Solve for x
    x = 923,032.76/1,372.72
  6. Step 6: Final answer
    x = 672.41

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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.