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Finding the Fourth Proportional to 1,322.03, 1,982.91 and 833.60

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Solution

The fourth proportional to 1,322.03, 1,982.91 and 833.60 is: 1,250.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.03 : 1,982.91 = 833.60 : x
  2. Step 2: Convert to fraction form
    1,322.03/1,982.91 = 833.60/x
  3. Step 3: Cross multiply
    1,322.03x = 1,982.91 × 833.60
  4. Step 4: Simplify right side
    1,322.03x = 1,652,953.78
  5. Step 5: Solve for x
    x = 1,652,953.78/1,322.03
  6. Step 6: Final answer
    x = 1,250.31

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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.