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Finding the Fourth Proportional to 734.08, 1,101.12 and 408.64

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Solution

The fourth proportional to 734.08, 1,101.12 and 408.64 is: 612.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.08 : 1,101.12 = 408.64 : x
  2. Step 2: Convert to fraction form
    734.08/1,101.12 = 408.64/x
  3. Step 3: Cross multiply
    734.08x = 1,101.12 × 408.64
  4. Step 4: Simplify right side
    734.08x = 449,961.68
  5. Step 5: Solve for x
    x = 449,961.68/734.08
  6. Step 6: Final answer
    x = 612.96

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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.