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Finding the Fourth Proportional to 2,018.40, 3,027.44 and 557.68

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Solution

The fourth proportional to 2,018.40, 3,027.44 and 557.68 is: 836.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,018.40 : 3,027.44 = 557.68 : x
  2. Step 2: Convert to fraction form
    2,018.40/3,027.44 = 557.68/x
  3. Step 3: Cross multiply
    2,018.40x = 3,027.44 × 557.68
  4. Step 4: Simplify right side
    2,018.40x = 1,688,342.74
  5. Step 5: Solve for x
    x = 1,688,342.74/2,018.40
  6. Step 6: Final answer
    x = 836.48

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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.