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Finding the Fourth Proportional to 758.69, 1,051.85 and 731.96

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Solution

The fourth proportional to 758.69, 1,051.85 and 731.96 is: 1,014.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    758.69 : 1,051.85 = 731.96 : x
  2. Step 2: Convert to fraction form
    758.69/1,051.85 = 731.96/x
  3. Step 3: Cross multiply
    758.69x = 1,051.85 × 731.96
  4. Step 4: Simplify right side
    758.69x = 769,912.13
  5. Step 5: Solve for x
    x = 769,912.13/758.69
  6. Step 6: Final answer
    x = 1,014.79

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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.