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Finding the Fourth Proportional to 2,065.40, 3,098.55 and 604.43

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Solution

The fourth proportional to 2,065.40, 3,098.55 and 604.43 is: 906.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,065.40 : 3,098.55 = 604.43 : x
  2. Step 2: Convert to fraction form
    2,065.40/3,098.55 = 604.43/x
  3. Step 3: Cross multiply
    2,065.40x = 3,098.55 × 604.43
  4. Step 4: Simplify right side
    2,065.40x = 1,872,856.58
  5. Step 5: Solve for x
    x = 1,872,856.58/2,065.40
  6. Step 6: Final answer
    x = 906.78

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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.