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Finding the Fourth Proportional to 1,779.95, 2,669.91 and 481.41

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Solution

The fourth proportional to 1,779.95, 2,669.91 and 481.41 is: 722.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.95 : 2,669.91 = 481.41 : x
  2. Step 2: Convert to fraction form
    1,779.95/2,669.91 = 481.41/x
  3. Step 3: Cross multiply
    1,779.95x = 2,669.91 × 481.41
  4. Step 4: Simplify right side
    1,779.95x = 1,285,321.37
  5. Step 5: Solve for x
    x = 1,285,321.37/1,779.95
  6. Step 6: Final answer
    x = 722.11

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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.