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Finding the Fourth Proportional to 448.52, 618.98 and 252.09

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Solution

The fourth proportional to 448.52, 618.98 and 252.09 is: 347.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.52 : 618.98 = 252.09 : x
  2. Step 2: Convert to fraction form
    448.52/618.98 = 252.09/x
  3. Step 3: Cross multiply
    448.52x = 618.98 × 252.09
  4. Step 4: Simplify right side
    448.52x = 156,037.41
  5. Step 5: Solve for x
    x = 156,037.41/448.52
  6. Step 6: Final answer
    x = 347.90

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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.