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Finding the Fourth Proportional to 734.49, 1,100.70 and 323.22

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Solution

The fourth proportional to 734.49, 1,100.70 and 323.22 is: 484.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.49 : 1,100.70 = 323.22 : x
  2. Step 2: Convert to fraction form
    734.49/1,100.70 = 323.22/x
  3. Step 3: Cross multiply
    734.49x = 1,100.70 × 323.22
  4. Step 4: Simplify right side
    734.49x = 355,768.25
  5. Step 5: Solve for x
    x = 355,768.25/734.49
  6. Step 6: Final answer
    x = 484.37

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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.