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Finding the Fourth Proportional to 454.45, 681.80 and 223.41

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Solution

The fourth proportional to 454.45, 681.80 and 223.41 is: 335.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.45 : 681.80 = 223.41 : x
  2. Step 2: Convert to fraction form
    454.45/681.80 = 223.41/x
  3. Step 3: Cross multiply
    454.45x = 681.80 × 223.41
  4. Step 4: Simplify right side
    454.45x = 152,320.43
  5. Step 5: Solve for x
    x = 152,320.43/454.45
  6. Step 6: Final answer
    x = 335.18

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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.