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Finding the Fourth Proportional to 736.17, 1,104.31 and 427.94

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Solution

The fourth proportional to 736.17, 1,104.31 and 427.94 is: 641.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.17 : 1,104.31 = 427.94 : x
  2. Step 2: Convert to fraction form
    736.17/1,104.31 = 427.94/x
  3. Step 3: Cross multiply
    736.17x = 1,104.31 × 427.94
  4. Step 4: Simplify right side
    736.17x = 472,572.90
  5. Step 5: Solve for x
    x = 472,572.90/736.17
  6. Step 6: Final answer
    x = 641.93

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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.