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Finding the Fourth Proportional to 1,469.93, 2,204.17 and 728.68

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Solution

The fourth proportional to 1,469.93, 2,204.17 and 728.68 is: 1,092.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,469.93 : 2,204.17 = 728.68 : x
  2. Step 2: Convert to fraction form
    1,469.93/2,204.17 = 728.68/x
  3. Step 3: Cross multiply
    1,469.93x = 2,204.17 × 728.68
  4. Step 4: Simplify right side
    1,469.93x = 1,606,130.95
  5. Step 5: Solve for x
    x = 1,606,130.95/1,469.93
  6. Step 6: Final answer
    x = 1,092.66

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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.