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Finding the Fourth Proportional to 265.42, 397.22 and 166.56

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Solution

The fourth proportional to 265.42, 397.22 and 166.56 is: 249.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.42 : 397.22 = 166.56 : x
  2. Step 2: Convert to fraction form
    265.42/397.22 = 166.56/x
  3. Step 3: Cross multiply
    265.42x = 397.22 × 166.56
  4. Step 4: Simplify right side
    265.42x = 66,160.96
  5. Step 5: Solve for x
    x = 66,160.96/265.42
  6. Step 6: Final answer
    x = 249.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.