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Finding the Fourth Proportional to 682.67, 941.99 and 395.21

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Solution

The fourth proportional to 682.67, 941.99 and 395.21 is: 545.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.67 : 941.99 = 395.21 : x
  2. Step 2: Convert to fraction form
    682.67/941.99 = 395.21/x
  3. Step 3: Cross multiply
    682.67x = 941.99 × 395.21
  4. Step 4: Simplify right side
    682.67x = 372,285.36
  5. Step 5: Solve for x
    x = 372,285.36/682.67
  6. Step 6: Final answer
    x = 545.34

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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.