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Finding the Fourth Proportional to 1,644.88, 2,269.84 and 898.69

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Solution

The fourth proportional to 1,644.88, 2,269.84 and 898.69 is: 1,240.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.88 : 2,269.84 = 898.69 : x
  2. Step 2: Convert to fraction form
    1,644.88/2,269.84 = 898.69/x
  3. Step 3: Cross multiply
    1,644.88x = 2,269.84 × 898.69
  4. Step 4: Simplify right side
    1,644.88x = 2,039,884.79
  5. Step 5: Solve for x
    x = 2,039,884.79/1,644.88
  6. Step 6: Final answer
    x = 1,240.14

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1.5x scale

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.