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Finding the Fourth Proportional to 1,007.11, 1,511.12 and 966.11

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Solution

The fourth proportional to 1,007.11, 1,511.12 and 966.11 is: 1,449.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007.11 : 1,511.12 = 966.11 : x
  2. Step 2: Convert to fraction form
    1,007.11/1,511.12 = 966.11/x
  3. Step 3: Cross multiply
    1,007.11x = 1,511.12 × 966.11
  4. Step 4: Simplify right side
    1,007.11x = 1,459,903.31
  5. Step 5: Solve for x
    x = 1,459,903.31/1,007.11
  6. Step 6: Final answer
    x = 1,449.60

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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.