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Finding the Fourth Proportional to 1,609.91, 2,414.71 and 623.19

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Solution

The fourth proportional to 1,609.91, 2,414.71 and 623.19 is: 934.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609.91 : 2,414.71 = 623.19 : x
  2. Step 2: Convert to fraction form
    1,609.91/2,414.71 = 623.19/x
  3. Step 3: Cross multiply
    1,609.91x = 2,414.71 × 623.19
  4. Step 4: Simplify right side
    1,609.91x = 1,504,832.96
  5. Step 5: Solve for x
    x = 1,504,832.96/1,609.91
  6. Step 6: Final answer
    x = 934.73

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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.