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Finding the Fourth Proportional to 448.97, 619.61 and 252.49

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Solution

The fourth proportional to 448.97, 619.61 and 252.49 is: 348.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.97 : 619.61 = 252.49 : x
  2. Step 2: Convert to fraction form
    448.97/619.61 = 252.49/x
  3. Step 3: Cross multiply
    448.97x = 619.61 × 252.49
  4. Step 4: Simplify right side
    448.97x = 156,445.33
  5. Step 5: Solve for x
    x = 156,445.33/448.97
  6. Step 6: Final answer
    x = 348.45

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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.