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Finding the Fourth Proportional to 273.93, 378.05 and 155.92

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Solution

The fourth proportional to 273.93, 378.05 and 155.92 is: 215.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.93 : 378.05 = 155.92 : x
  2. Step 2: Convert to fraction form
    273.93/378.05 = 155.92/x
  3. Step 3: Cross multiply
    273.93x = 378.05 × 155.92
  4. Step 4: Simplify right side
    273.93x = 58,946.28
  5. Step 5: Solve for x
    x = 58,946.28/273.93
  6. Step 6: Final answer
    x = 215.19

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.