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Finding the Fourth Proportional to 448.31, 618.63 and 273.62

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Solution

The fourth proportional to 448.31, 618.63 and 273.62 is: 377.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.31 : 618.63 = 273.62 : x
  2. Step 2: Convert to fraction form
    448.31/618.63 = 273.62/x
  3. Step 3: Cross multiply
    448.31x = 618.63 × 273.62
  4. Step 4: Simplify right side
    448.31x = 169,269.54
  5. Step 5: Solve for x
    x = 169,269.54/448.31
  6. Step 6: Final answer
    x = 377.57

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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.