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Finding the Fourth Proportional to 845.11, 1,266.83 and 383

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Solution

The fourth proportional to 845.11, 1,266.83 and 383 is: 574.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.11 : 1,266.83 = 383 : x
  2. Step 2: Convert to fraction form
    845.11/1,266.83 = 383/x
  3. Step 3: Cross multiply
    845.11x = 1,266.83 × 383
  4. Step 4: Simplify right side
    845.11x = 485,193.98
  5. Step 5: Solve for x
    x = 485,193.98/845.11
  6. Step 6: Final answer
    x = 574.12

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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.