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Finding the Fourth Proportional to 273.40, 377.12 and 207.79

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Solution

The fourth proportional to 273.40, 377.12 and 207.79 is: 286.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.40 : 377.12 = 207.79 : x
  2. Step 2: Convert to fraction form
    273.40/377.12 = 207.79/x
  3. Step 3: Cross multiply
    273.40x = 377.12 × 207.79
  4. Step 4: Simplify right side
    273.40x = 78,358.84
  5. Step 5: Solve for x
    x = 78,358.84/273.40
  6. Step 6: Final answer
    x = 286.61

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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.