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Finding the Fourth Proportional to 1,609.41, 2,414.25 and 455.16

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Solution

The fourth proportional to 1,609.41, 2,414.25 and 455.16 is: 682.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609.41 : 2,414.25 = 455.16 : x
  2. Step 2: Convert to fraction form
    1,609.41/2,414.25 = 455.16/x
  3. Step 3: Cross multiply
    1,609.41x = 2,414.25 × 455.16
  4. Step 4: Simplify right side
    1,609.41x = 1,098,860.98
  5. Step 5: Solve for x
    x = 1,098,860.98/1,609.41
  6. Step 6: Final answer
    x = 682.77

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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.