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Finding the Fourth Proportional to 1,609.96, 2,414.82 and 623.25

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Solution

The fourth proportional to 1,609.96, 2,414.82 and 623.25 is: 934.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609.96 : 2,414.82 = 623.25 : x
  2. Step 2: Convert to fraction form
    1,609.96/2,414.82 = 623.25/x
  3. Step 3: Cross multiply
    1,609.96x = 2,414.82 × 623.25
  4. Step 4: Simplify right side
    1,609.96x = 1,505,021.37
  5. Step 5: Solve for x
    x = 1,505,021.37/1,609.96
  6. Step 6: Final answer
    x = 934.82

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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.