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Finding the Fourth Proportional to 736.26, 1,104.42 and 427.92

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Solution

The fourth proportional to 736.26, 1,104.42 and 427.92 is: 641.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.26 : 1,104.42 = 427.92 : x
  2. Step 2: Convert to fraction form
    736.26/1,104.42 = 427.92/x
  3. Step 3: Cross multiply
    736.26x = 1,104.42 × 427.92
  4. Step 4: Simplify right side
    736.26x = 472,603.41
  5. Step 5: Solve for x
    x = 472,603.41/736.26
  6. Step 6: Final answer
    x = 641.90

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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.