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Finding the Fourth Proportional to 1,641.03, 2,459.79 and 717.09

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Solution

The fourth proportional to 1,641.03, 2,459.79 and 717.09 is: 1,074.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,641.03 : 2,459.79 = 717.09 : x
  2. Step 2: Convert to fraction form
    1,641.03/2,459.79 = 717.09/x
  3. Step 3: Cross multiply
    1,641.03x = 2,459.79 × 717.09
  4. Step 4: Simplify right side
    1,641.03x = 1,763,890.81
  5. Step 5: Solve for x
    x = 1,763,890.81/1,641.03
  6. Step 6: Final answer
    x = 1,074.87

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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.