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Finding the Fourth Proportional to 449.07, 619.65 and 252.54

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Solution

The fourth proportional to 449.07, 619.65 and 252.54 is: 348.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.07 : 619.65 = 252.54 : x
  2. Step 2: Convert to fraction form
    449.07/619.65 = 252.54/x
  3. Step 3: Cross multiply
    449.07x = 619.65 × 252.54
  4. Step 4: Simplify right side
    449.07x = 156,486.41
  5. Step 5: Solve for x
    x = 156,486.41/449.07
  6. Step 6: Final answer
    x = 348.47

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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.