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Finding the Fourth Proportional to 1,245.22, 1,869.09 and 833.02

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Solution

The fourth proportional to 1,245.22, 1,869.09 and 833.02 is: 1,250.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.22 : 1,869.09 = 833.02 : x
  2. Step 2: Convert to fraction form
    1,245.22/1,869.09 = 833.02/x
  3. Step 3: Cross multiply
    1,245.22x = 1,869.09 × 833.02
  4. Step 4: Simplify right side
    1,245.22x = 1,556,989.35
  5. Step 5: Solve for x
    x = 1,556,989.35/1,245.22
  6. Step 6: Final answer
    x = 1,250.37

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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.