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Finding the Fourth Proportional to 2,019.70, 3,029.19 and 558.55

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Solution

The fourth proportional to 2,019.70, 3,029.19 and 558.55 is: 837.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,019.70 : 3,029.19 = 558.55 : x
  2. Step 2: Convert to fraction form
    2,019.70/3,029.19 = 558.55/x
  3. Step 3: Cross multiply
    2,019.70x = 3,029.19 × 558.55
  4. Step 4: Simplify right side
    2,019.70x = 1,691,954.07
  5. Step 5: Solve for x
    x = 1,691,954.07/2,019.70
  6. Step 6: Final answer
    x = 837.73

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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.