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Finding the Fourth Proportional to 1,644.60, 2,269.62 and 898.56

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Solution

The fourth proportional to 1,644.60, 2,269.62 and 898.56 is: 1,240.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.60 : 2,269.62 = 898.56 : x
  2. Step 2: Convert to fraction form
    1,644.60/2,269.62 = 898.56/x
  3. Step 3: Cross multiply
    1,644.60x = 2,269.62 × 898.56
  4. Step 4: Simplify right side
    1,644.60x = 2,039,389.75
  5. Step 5: Solve for x
    x = 2,039,389.75/1,644.60
  6. Step 6: Final answer
    x = 1,240.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.