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Finding the Fourth Proportional to 682.19, 1,022.60 and 271.07

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Solution

The fourth proportional to 682.19, 1,022.60 and 271.07 is: 406.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.19 : 1,022.60 = 271.07 : x
  2. Step 2: Convert to fraction form
    682.19/1,022.60 = 271.07/x
  3. Step 3: Cross multiply
    682.19x = 1,022.60 × 271.07
  4. Step 4: Simplify right side
    682.19x = 277,191.75
  5. Step 5: Solve for x
    x = 277,191.75/682.19
  6. Step 6: Final answer
    x = 406.33

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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.