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Finding the Fourth Proportional to 2,019.47, 3,029.20 and 558.51

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Solution

The fourth proportional to 2,019.47, 3,029.20 and 558.51 is: 837.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,019.47 : 3,029.20 = 558.51 : x
  2. Step 2: Convert to fraction form
    2,019.47/3,029.20 = 558.51/x
  3. Step 3: Cross multiply
    2,019.47x = 3,029.20 × 558.51
  4. Step 4: Simplify right side
    2,019.47x = 1,691,838.49
  5. Step 5: Solve for x
    x = 1,691,838.49/2,019.47
  6. Step 6: Final answer
    x = 837.76

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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.