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Finding the Fourth Proportional to 1,608.86, 2,221.59 and 1,020.44

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Solution

The fourth proportional to 1,608.86, 2,221.59 and 1,020.44 is: 1,409.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,608.86 : 2,221.59 = 1,020.44 : x
  2. Step 2: Convert to fraction form
    1,608.86/2,221.59 = 1,020.44/x
  3. Step 3: Cross multiply
    1,608.86x = 2,221.59 × 1,020.44
  4. Step 4: Simplify right side
    1,608.86x = 2,266,999.30
  5. Step 5: Solve for x
    x = 2,266,999.30/1,608.86
  6. Step 6: Final answer
    x = 1,409.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.