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Finding the Fourth Proportional to 273.15, 408.90 and 212.01

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Solution

The fourth proportional to 273.15, 408.90 and 212.01 is: 317.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.15 : 408.90 = 212.01 : x
  2. Step 2: Convert to fraction form
    273.15/408.90 = 212.01/x
  3. Step 3: Cross multiply
    273.15x = 408.90 × 212.01
  4. Step 4: Simplify right side
    273.15x = 86,690.89
  5. Step 5: Solve for x
    x = 86,690.89/273.15
  6. Step 6: Final answer
    x = 317.37

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.