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Finding the Fourth Proportional to 273.93, 378.50 and 208.32

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Solution

The fourth proportional to 273.93, 378.50 and 208.32 is: 287.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.93 : 378.50 = 208.32 : x
  2. Step 2: Convert to fraction form
    273.93/378.50 = 208.32/x
  3. Step 3: Cross multiply
    273.93x = 378.50 × 208.32
  4. Step 4: Simplify right side
    273.93x = 78,849.12
  5. Step 5: Solve for x
    x = 78,849.12/273.93
  6. Step 6: Final answer
    x = 287.84

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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.