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Finding the Fourth Proportional to 1,341.21, 1,850.77 and 743.73

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Solution

The fourth proportional to 1,341.21, 1,850.77 and 743.73 is: 1,026.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,341.21 : 1,850.77 = 743.73 : x
  2. Step 2: Convert to fraction form
    1,341.21/1,850.77 = 743.73/x
  3. Step 3: Cross multiply
    1,341.21x = 1,850.77 × 743.73
  4. Step 4: Simplify right side
    1,341.21x = 1,376,479.66
  5. Step 5: Solve for x
    x = 1,376,479.66/1,341.21
  6. Step 6: Final answer
    x = 1,026.30

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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.