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Finding the Fourth Proportional to 1,639.87, 2,460.11 and 544.01

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Solution

The fourth proportional to 1,639.87, 2,460.11 and 544.01 is: 816.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.87 : 2,460.11 = 544.01 : x
  2. Step 2: Convert to fraction form
    1,639.87/2,460.11 = 544.01/x
  3. Step 3: Cross multiply
    1,639.87x = 2,460.11 × 544.01
  4. Step 4: Simplify right side
    1,639.87x = 1,338,309.42
  5. Step 5: Solve for x
    x = 1,338,309.42/1,639.87
  6. Step 6: Final answer
    x = 816.11

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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.