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Finding the Fourth Proportional to 1,446.05, 2,169.35 and 580.43

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Solution

The fourth proportional to 1,446.05, 2,169.35 and 580.43 is: 870.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,446.05 : 2,169.35 = 580.43 : x
  2. Step 2: Convert to fraction form
    1,446.05/2,169.35 = 580.43/x
  3. Step 3: Cross multiply
    1,446.05x = 2,169.35 × 580.43
  4. Step 4: Simplify right side
    1,446.05x = 1,259,152.92
  5. Step 5: Solve for x
    x = 1,259,152.92/1,446.05
  6. Step 6: Final answer
    x = 870.75

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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.