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Finding the Fourth Proportional to 273.22, 377.06 and 155.21

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Solution

The fourth proportional to 273.22, 377.06 and 155.21 is: 214.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.22 : 377.06 = 155.21 : x
  2. Step 2: Convert to fraction form
    273.22/377.06 = 155.21/x
  3. Step 3: Cross multiply
    273.22x = 377.06 × 155.21
  4. Step 4: Simplify right side
    273.22x = 58,523.48
  5. Step 5: Solve for x
    x = 58,523.48/273.22
  6. Step 6: Final answer
    x = 214.20

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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.