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Finding the Fourth Proportional to 734.64, 1,100.72 and 344

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Solution

The fourth proportional to 734.64, 1,100.72 and 344 is: 515.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.64 : 1,100.72 = 344 : x
  2. Step 2: Convert to fraction form
    734.64/1,100.72 = 344/x
  3. Step 3: Cross multiply
    734.64x = 1,100.72 × 344
  4. Step 4: Simplify right side
    734.64x = 378,647.68
  5. Step 5: Solve for x
    x = 378,647.68/734.64
  6. Step 6: Final answer
    x = 515.42

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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.