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Finding the Fourth Proportional to 682.93, 1,024.51 and 220.83

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Solution

The fourth proportional to 682.93, 1,024.51 and 220.83 is: 331.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.93 : 1,024.51 = 220.83 : x
  2. Step 2: Convert to fraction form
    682.93/1,024.51 = 220.83/x
  3. Step 3: Cross multiply
    682.93x = 1,024.51 × 220.83
  4. Step 4: Simplify right side
    682.93x = 226,238.56
  5. Step 5: Solve for x
    x = 226,238.56/682.93
  6. Step 6: Final answer
    x = 331.28

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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.