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Finding the Fourth Proportional to 385.26, 531.59 and 227.86

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Solution

The fourth proportional to 385.26, 531.59 and 227.86 is: 314.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    385.26 : 531.59 = 227.86 : x
  2. Step 2: Convert to fraction form
    385.26/531.59 = 227.86/x
  3. Step 3: Cross multiply
    385.26x = 531.59 × 227.86
  4. Step 4: Simplify right side
    385.26x = 121,129.33
  5. Step 5: Solve for x
    x = 121,129.33/385.26
  6. Step 6: Final answer
    x = 314.41

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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.