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Finding the Fourth Proportional to 682.38, 941.68 and 371.88

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Solution

The fourth proportional to 682.38, 941.68 and 371.88 is: 513.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.38 : 941.68 = 371.88 : x
  2. Step 2: Convert to fraction form
    682.38/941.68 = 371.88/x
  3. Step 3: Cross multiply
    682.38x = 941.68 × 371.88
  4. Step 4: Simplify right side
    682.38x = 350,187.25
  5. Step 5: Solve for x
    x = 350,187.25/682.38
  6. Step 6: Final answer
    x = 513.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.