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Finding the Fourth Proportional to 1,674.66, 2,511.89 and 579.05

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Solution

The fourth proportional to 1,674.66, 2,511.89 and 579.05 is: 868.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,674.66 : 2,511.89 = 579.05 : x
  2. Step 2: Convert to fraction form
    1,674.66/2,511.89 = 579.05/x
  3. Step 3: Cross multiply
    1,674.66x = 2,511.89 × 579.05
  4. Step 4: Simplify right side
    1,674.66x = 1,454,494.45
  5. Step 5: Solve for x
    x = 1,454,494.45/1,674.66
  6. Step 6: Final answer
    x = 868.53

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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.