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Finding the Fourth Proportional to 273.12, 377.76 and 253.92

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Solution

The fourth proportional to 273.12, 377.76 and 253.92 is: 351.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.12 : 377.76 = 253.92 : x
  2. Step 2: Convert to fraction form
    273.12/377.76 = 253.92/x
  3. Step 3: Cross multiply
    273.12x = 377.76 × 253.92
  4. Step 4: Simplify right side
    273.12x = 95,920.82
  5. Step 5: Solve for x
    x = 95,920.82/273.12
  6. Step 6: Final answer
    x = 351.20

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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.