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Finding the Fourth Proportional to 273.86, 377.92 and 157.43

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Solution

The fourth proportional to 273.86, 377.92 and 157.43 is: 217.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.86 : 377.92 = 157.43 : x
  2. Step 2: Convert to fraction form
    273.86/377.92 = 157.43/x
  3. Step 3: Cross multiply
    273.86x = 377.92 × 157.43
  4. Step 4: Simplify right side
    273.86x = 59,495.95
  5. Step 5: Solve for x
    x = 59,495.95/273.86
  6. Step 6: Final answer
    x = 217.25

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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.