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Finding the Fourth Proportional to 449.00, 619.58 and 249.80

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Solution

The fourth proportional to 449.00, 619.58 and 249.80 is: 344.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.00 : 619.58 = 249.80 : x
  2. Step 2: Convert to fraction form
    449.00/619.58 = 249.80/x
  3. Step 3: Cross multiply
    449.00x = 619.58 × 249.80
  4. Step 4: Simplify right side
    449.00x = 154,766.74
  5. Step 5: Solve for x
    x = 154,766.74/449.00
  6. Step 6: Final answer
    x = 344.70

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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.