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Finding the Fourth Proportional to 883.61, 1,323.36 and 852.85

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Solution

The fourth proportional to 883.61, 1,323.36 and 852.85 is: 1,277.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.61 : 1,323.36 = 852.85 : x
  2. Step 2: Convert to fraction form
    883.61/1,323.36 = 852.85/x
  3. Step 3: Cross multiply
    883.61x = 1,323.36 × 852.85
  4. Step 4: Simplify right side
    883.61x = 1,128,626.03
  5. Step 5: Solve for x
    x = 1,128,626.03/883.61
  6. Step 6: Final answer
    x = 1,277.30

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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.