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Finding the Fourth Proportional to 448.70, 619.22 and 273.94

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Solution

The fourth proportional to 448.70, 619.22 and 273.94 is: 378.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.70 : 619.22 = 273.94 : x
  2. Step 2: Convert to fraction form
    448.70/619.22 = 273.94/x
  3. Step 3: Cross multiply
    448.70x = 619.22 × 273.94
  4. Step 4: Simplify right side
    448.70x = 169,628.26
  5. Step 5: Solve for x
    x = 169,628.26/448.70
  6. Step 6: Final answer
    x = 378.05

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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.