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Finding the Fourth Proportional to 273.28, 377.58 and 208.12

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Solution

The fourth proportional to 273.28, 377.58 and 208.12 is: 287.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.28 : 377.58 = 208.12 : x
  2. Step 2: Convert to fraction form
    273.28/377.58 = 208.12/x
  3. Step 3: Cross multiply
    273.28x = 377.58 × 208.12
  4. Step 4: Simplify right side
    273.28x = 78,581.95
  5. Step 5: Solve for x
    x = 78,581.95/273.28
  6. Step 6: Final answer
    x = 287.55

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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.