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Finding the Fourth Proportional to 736.61, 1,104.72 and 274.43

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Solution

The fourth proportional to 736.61, 1,104.72 and 274.43 is: 411.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.61 : 1,104.72 = 274.43 : x
  2. Step 2: Convert to fraction form
    736.61/1,104.72 = 274.43/x
  3. Step 3: Cross multiply
    736.61x = 1,104.72 × 274.43
  4. Step 4: Simplify right side
    736.61x = 303,162.79
  5. Step 5: Solve for x
    x = 303,162.79/736.61
  6. Step 6: Final answer
    x = 411.57

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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.