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Finding the Fourth Proportional to 728.43, 1,093.10 and 295.59

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Solution

The fourth proportional to 728.43, 1,093.10 and 295.59 is: 443.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    728.43 : 1,093.10 = 295.59 : x
  2. Step 2: Convert to fraction form
    728.43/1,093.10 = 295.59/x
  3. Step 3: Cross multiply
    728.43x = 1,093.10 × 295.59
  4. Step 4: Simplify right side
    728.43x = 323,109.43
  5. Step 5: Solve for x
    x = 323,109.43/728.43
  6. Step 6: Final answer
    x = 443.57

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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.