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Finding the Fourth Proportional to 448.55, 618.97 and 249.37

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Solution

The fourth proportional to 448.55, 618.97 and 249.37 is: 344.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.55 : 618.97 = 249.37 : x
  2. Step 2: Convert to fraction form
    448.55/618.97 = 249.37/x
  3. Step 3: Cross multiply
    448.55x = 618.97 × 249.37
  4. Step 4: Simplify right side
    448.55x = 154,352.55
  5. Step 5: Solve for x
    x = 154,352.55/448.55
  6. Step 6: Final answer
    x = 344.11

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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.