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Finding the Fourth Proportional to 2,019.78, 3,029.73 and 558.93

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Solution

The fourth proportional to 2,019.78, 3,029.73 and 558.93 is: 838.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,019.78 : 3,029.73 = 558.93 : x
  2. Step 2: Convert to fraction form
    2,019.78/3,029.73 = 558.93/x
  3. Step 3: Cross multiply
    2,019.78x = 3,029.73 × 558.93
  4. Step 4: Simplify right side
    2,019.78x = 1,693,406.99
  5. Step 5: Solve for x
    x = 1,693,406.99/2,019.78
  6. Step 6: Final answer
    x = 838.41

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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.