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Finding the Fourth Proportional to 682.16, 1,023.05 and 271.29

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Solution

The fourth proportional to 682.16, 1,023.05 and 271.29 is: 406.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.16 : 1,023.05 = 271.29 : x
  2. Step 2: Convert to fraction form
    682.16/1,023.05 = 271.29/x
  3. Step 3: Cross multiply
    682.16x = 1,023.05 × 271.29
  4. Step 4: Simplify right side
    682.16x = 277,543.23
  5. Step 5: Solve for x
    x = 277,543.23/682.16
  6. Step 6: Final answer
    x = 406.86

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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.