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Finding the Fourth Proportional to 448.59, 618.98 and 252.11

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Solution

The fourth proportional to 448.59, 618.98 and 252.11 is: 347.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.59 : 618.98 = 252.11 : x
  2. Step 2: Convert to fraction form
    448.59/618.98 = 252.11/x
  3. Step 3: Cross multiply
    448.59x = 618.98 × 252.11
  4. Step 4: Simplify right side
    448.59x = 156,046.69
  5. Step 5: Solve for x
    x = 156,046.69/448.59
  6. Step 6: Final answer
    x = 347.86

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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.