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Finding the Fourth Proportional to 182.15, 251.31 and 111.23

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Solution

The fourth proportional to 182.15, 251.31 and 111.23 is: 153.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.15 : 251.31 = 111.23 : x
  2. Step 2: Convert to fraction form
    182.15/251.31 = 111.23/x
  3. Step 3: Cross multiply
    182.15x = 251.31 × 111.23
  4. Step 4: Simplify right side
    182.15x = 27,953.10
  5. Step 5: Solve for x
    x = 27,953.10/182.15
  6. Step 6: Final answer
    x = 153.46

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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.