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Finding the Fourth Proportional to 1,211.89, 1,817.03 and 562.27

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Solution

The fourth proportional to 1,211.89, 1,817.03 and 562.27 is: 843.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211.89 : 1,817.03 = 562.27 : x
  2. Step 2: Convert to fraction form
    1,211.89/1,817.03 = 562.27/x
  3. Step 3: Cross multiply
    1,211.89x = 1,817.03 × 562.27
  4. Step 4: Simplify right side
    1,211.89x = 1,021,658.65
  5. Step 5: Solve for x
    x = 1,021,658.65/1,211.89
  6. Step 6: Final answer
    x = 843.03

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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.