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Finding the Fourth Proportional to 215.97, 297.70 and 169.23

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Solution

The fourth proportional to 215.97, 297.70 and 169.23 is: 233.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.97 : 297.70 = 169.23 : x
  2. Step 2: Convert to fraction form
    215.97/297.70 = 169.23/x
  3. Step 3: Cross multiply
    215.97x = 297.70 × 169.23
  4. Step 4: Simplify right side
    215.97x = 50,379.77
  5. Step 5: Solve for x
    x = 50,379.77/215.97
  6. Step 6: Final answer
    x = 233.27

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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.