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Finding the Fourth Proportional to 736.21, 1,103.28 and 581.46

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Solution

The fourth proportional to 736.21, 1,103.28 and 581.46 is: 871.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.21 : 1,103.28 = 581.46 : x
  2. Step 2: Convert to fraction form
    736.21/1,103.28 = 581.46/x
  3. Step 3: Cross multiply
    736.21x = 1,103.28 × 581.46
  4. Step 4: Simplify right side
    736.21x = 641,513.19
  5. Step 5: Solve for x
    x = 641,513.19/736.21
  6. Step 6: Final answer
    x = 871.37

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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.