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Finding the Fourth Proportional to 454.97, 681.74 and 259.73

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Solution

The fourth proportional to 454.97, 681.74 and 259.73 is: 389.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.97 : 681.74 = 259.73 : x
  2. Step 2: Convert to fraction form
    454.97/681.74 = 259.73/x
  3. Step 3: Cross multiply
    454.97x = 681.74 × 259.73
  4. Step 4: Simplify right side
    454.97x = 177,063.62
  5. Step 5: Solve for x
    x = 177,063.62/454.97
  6. Step 6: Final answer
    x = 389.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.