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Finding the Fourth Proportional to 736.72, 1,104.19 and 325.39

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Solution

The fourth proportional to 736.72, 1,104.19 and 325.39 is: 487.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.72 : 1,104.19 = 325.39 : x
  2. Step 2: Convert to fraction form
    736.72/1,104.19 = 325.39/x
  3. Step 3: Cross multiply
    736.72x = 1,104.19 × 325.39
  4. Step 4: Simplify right side
    736.72x = 359,292.38
  5. Step 5: Solve for x
    x = 359,292.38/736.72
  6. Step 6: Final answer
    x = 487.69

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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.