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Finding the Fourth Proportional to 736.49, 1,102.61 and 634.43

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Solution

The fourth proportional to 736.49, 1,102.61 and 634.43 is: 949.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.49 : 1,102.61 = 634.43 : x
  2. Step 2: Convert to fraction form
    736.49/1,102.61 = 634.43/x
  3. Step 3: Cross multiply
    736.49x = 1,102.61 × 634.43
  4. Step 4: Simplify right side
    736.49x = 699,525.69
  5. Step 5: Solve for x
    x = 699,525.69/736.49
  6. Step 6: Final answer
    x = 949.81

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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.