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Finding the Fourth Proportional to 2,194.74, 3,292.21 and 551.30

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Solution

The fourth proportional to 2,194.74, 3,292.21 and 551.30 is: 826.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,194.74 : 3,292.21 = 551.30 : x
  2. Step 2: Convert to fraction form
    2,194.74/3,292.21 = 551.30/x
  3. Step 3: Cross multiply
    2,194.74x = 3,292.21 × 551.30
  4. Step 4: Simplify right side
    2,194.74x = 1,814,998.12
  5. Step 5: Solve for x
    x = 1,814,998.12/2,194.74
  6. Step 6: Final answer
    x = 826.98

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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.