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Finding the Fourth Proportional to 682.01, 941.11 and 387.22

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Solution

The fourth proportional to 682.01, 941.11 and 387.22 is: 534.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.01 : 941.11 = 387.22 : x
  2. Step 2: Convert to fraction form
    682.01/941.11 = 387.22/x
  3. Step 3: Cross multiply
    682.01x = 941.11 × 387.22
  4. Step 4: Simplify right side
    682.01x = 364,414.68
  5. Step 5: Solve for x
    x = 364,414.68/682.01
  6. Step 6: Final answer
    x = 534.32

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Double scale
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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.