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Finding the Fourth Proportional to 273.26, 377.14 and 155.28

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Solution

The fourth proportional to 273.26, 377.14 and 155.28 is: 214.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.26 : 377.14 = 155.28 : x
  2. Step 2: Convert to fraction form
    273.26/377.14 = 155.28/x
  3. Step 3: Cross multiply
    273.26x = 377.14 × 155.28
  4. Step 4: Simplify right side
    273.26x = 58,563.62
  5. Step 5: Solve for x
    x = 58,563.62/273.26
  6. Step 6: Final answer
    x = 214.32

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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.