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Finding the Fourth Proportional to 1,779.23, 2,668.89 and 480.69

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Solution

The fourth proportional to 1,779.23, 2,668.89 and 480.69 is: 721.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.23 : 2,668.89 = 480.69 : x
  2. Step 2: Convert to fraction form
    1,779.23/2,668.89 = 480.69/x
  3. Step 3: Cross multiply
    1,779.23x = 2,668.89 × 480.69
  4. Step 4: Simplify right side
    1,779.23x = 1,282,906.33
  5. Step 5: Solve for x
    x = 1,282,906.33/1,779.23
  6. Step 6: Final answer
    x = 721.05

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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.