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Finding the Fourth Proportional to 215.46, 323.37 and 124.29

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Solution

The fourth proportional to 215.46, 323.37 and 124.29 is: 186.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.46 : 323.37 = 124.29 : x
  2. Step 2: Convert to fraction form
    215.46/323.37 = 124.29/x
  3. Step 3: Cross multiply
    215.46x = 323.37 × 124.29
  4. Step 4: Simplify right side
    215.46x = 40,191.66
  5. Step 5: Solve for x
    x = 40,191.66/215.46
  6. Step 6: Final answer
    x = 186.54

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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.