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Finding the Fourth Proportional to 2,288.48, 3,432.72 and 728.51

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Solution

The fourth proportional to 2,288.48, 3,432.72 and 728.51 is: 1,092.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,288.48 : 3,432.72 = 728.51 : x
  2. Step 2: Convert to fraction form
    2,288.48/3,432.72 = 728.51/x
  3. Step 3: Cross multiply
    2,288.48x = 3,432.72 × 728.51
  4. Step 4: Simplify right side
    2,288.48x = 2,500,770.85
  5. Step 5: Solve for x
    x = 2,500,770.85/2,288.48
  6. Step 6: Final answer
    x = 1,092.77

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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.