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Finding the Fourth Proportional to 837.23, 1,255.44 and 289.27

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Solution

The fourth proportional to 837.23, 1,255.44 and 289.27 is: 433.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.23 : 1,255.44 = 289.27 : x
  2. Step 2: Convert to fraction form
    837.23/1,255.44 = 289.27/x
  3. Step 3: Cross multiply
    837.23x = 1,255.44 × 289.27
  4. Step 4: Simplify right side
    837.23x = 363,161.13
  5. Step 5: Solve for x
    x = 363,161.13/837.23
  6. Step 6: Final answer
    x = 433.77

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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.