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Finding the Fourth Proportional to 682.36, 1,023.80 and 271.37

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Solution

The fourth proportional to 682.36, 1,023.80 and 271.37 is: 407.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.36 : 1,023.80 = 271.37 : x
  2. Step 2: Convert to fraction form
    682.36/1,023.80 = 271.37/x
  3. Step 3: Cross multiply
    682.36x = 1,023.80 × 271.37
  4. Step 4: Simplify right side
    682.36x = 277,829.81
  5. Step 5: Solve for x
    x = 277,829.81/682.36
  6. Step 6: Final answer
    x = 407.16

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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.