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Finding the Fourth Proportional to 2,018.68, 3,027.64 and 557.52

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Solution

The fourth proportional to 2,018.68, 3,027.64 and 557.52 is: 836.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,018.68 : 3,027.64 = 557.52 : x
  2. Step 2: Convert to fraction form
    2,018.68/3,027.64 = 557.52/x
  3. Step 3: Cross multiply
    2,018.68x = 3,027.64 × 557.52
  4. Step 4: Simplify right side
    2,018.68x = 1,687,969.85
  5. Step 5: Solve for x
    x = 1,687,969.85/2,018.68
  6. Step 6: Final answer
    x = 836.18

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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.