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Finding the Fourth Proportional to 1,639.57, 2,459.49 and 544.09

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Solution

The fourth proportional to 1,639.57, 2,459.49 and 544.09 is: 816.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.57 : 2,459.49 = 544.09 : x
  2. Step 2: Convert to fraction form
    1,639.57/2,459.49 = 544.09/x
  3. Step 3: Cross multiply
    1,639.57x = 2,459.49 × 544.09
  4. Step 4: Simplify right side
    1,639.57x = 1,338,183.91
  5. Step 5: Solve for x
    x = 1,338,183.91/1,639.57
  6. Step 6: Final answer
    x = 816.18

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1.5x scale

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.