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Finding the Fourth Proportional to 682.69, 942.11 and 372.19

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Solution

The fourth proportional to 682.69, 942.11 and 372.19 is: 513.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.69 : 942.11 = 372.19 : x
  2. Step 2: Convert to fraction form
    682.69/942.11 = 372.19/x
  3. Step 3: Cross multiply
    682.69x = 942.11 × 372.19
  4. Step 4: Simplify right side
    682.69x = 350,641.10
  5. Step 5: Solve for x
    x = 350,641.10/682.69
  6. Step 6: Final answer
    x = 513.62

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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.