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Finding the Fourth Proportional to 263.13, 394.12 and 171.56

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Solution

The fourth proportional to 263.13, 394.12 and 171.56 is: 256.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.13 : 394.12 = 171.56 : x
  2. Step 2: Convert to fraction form
    263.13/394.12 = 171.56/x
  3. Step 3: Cross multiply
    263.13x = 394.12 × 171.56
  4. Step 4: Simplify right side
    263.13x = 67,615.23
  5. Step 5: Solve for x
    x = 67,615.23/263.13
  6. Step 6: Final answer
    x = 256.97

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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.