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Finding the Fourth Proportional to 1,007.33, 1,511.88 and 843.81

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Solution

The fourth proportional to 1,007.33, 1,511.88 and 843.81 is: 1,266.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007.33 : 1,511.88 = 843.81 : x
  2. Step 2: Convert to fraction form
    1,007.33/1,511.88 = 843.81/x
  3. Step 3: Cross multiply
    1,007.33x = 1,511.88 × 843.81
  4. Step 4: Simplify right side
    1,007.33x = 1,275,739.46
  5. Step 5: Solve for x
    x = 1,275,739.46/1,007.33
  6. Step 6: Final answer
    x = 1,266.46

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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.