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Finding the Fourth Proportional to 277, 415.52 and 112.52

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Solution

The fourth proportional to 277, 415.52 and 112.52 is: 168.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    277 : 415.52 = 112.52 : x
  2. Step 2: Convert to fraction form
    277/415.52 = 112.52/x
  3. Step 3: Cross multiply
    277x = 415.52 × 112.52
  4. Step 4: Simplify right side
    277x = 46,754.31
  5. Step 5: Solve for x
    x = 46,754.31/277
  6. Step 6: Final answer
    x = 168.79

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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.