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Finding the Fourth Proportional to 756.69, 1,049.07 and 729.96

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Solution

The fourth proportional to 756.69, 1,049.07 and 729.96 is: 1,012.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.69 : 1,049.07 = 729.96 : x
  2. Step 2: Convert to fraction form
    756.69/1,049.07 = 729.96/x
  3. Step 3: Cross multiply
    756.69x = 1,049.07 × 729.96
  4. Step 4: Simplify right side
    756.69x = 765,779.14
  5. Step 5: Solve for x
    x = 765,779.14/756.69
  6. Step 6: Final answer
    x = 1,012.01

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.