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Finding the Fourth Proportional to 1,644.73, 2,269.77 and 898.75

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Solution

The fourth proportional to 1,644.73, 2,269.77 and 898.75 is: 1,240.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.73 : 2,269.77 = 898.75 : x
  2. Step 2: Convert to fraction form
    1,644.73/2,269.77 = 898.75/x
  3. Step 3: Cross multiply
    1,644.73x = 2,269.77 × 898.75
  4. Step 4: Simplify right side
    1,644.73x = 2,039,955.79
  5. Step 5: Solve for x
    x = 2,039,955.79/1,644.73
  6. Step 6: Final answer
    x = 1,240.30

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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.