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Finding the Fourth Proportional to 836.52, 1,153.89 and 637.26

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Solution

The fourth proportional to 836.52, 1,153.89 and 637.26 is: 879.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.52 : 1,153.89 = 637.26 : x
  2. Step 2: Convert to fraction form
    836.52/1,153.89 = 637.26/x
  3. Step 3: Cross multiply
    836.52x = 1,153.89 × 637.26
  4. Step 4: Simplify right side
    836.52x = 735,327.94
  5. Step 5: Solve for x
    x = 735,327.94/836.52
  6. Step 6: Final answer
    x = 879.03

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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.