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Finding the Fourth Proportional to 1,347.73, 2,022 and 423.39

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Solution

The fourth proportional to 1,347.73, 2,022 and 423.39 is: 635.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.73 : 2,022 = 423.39 : x
  2. Step 2: Convert to fraction form
    1,347.73/2,022 = 423.39/x
  3. Step 3: Cross multiply
    1,347.73x = 2,022 × 423.39
  4. Step 4: Simplify right side
    1,347.73x = 856,094.58
  5. Step 5: Solve for x
    x = 856,094.58/1,347.73
  6. Step 6: Final answer
    x = 635.21

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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.