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Finding the Fourth Proportional to 852.09, 1,175.91 and 553.41

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Solution

The fourth proportional to 852.09, 1,175.91 and 553.41 is: 763.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.09 : 1,175.91 = 553.41 : x
  2. Step 2: Convert to fraction form
    852.09/1,175.91 = 553.41/x
  3. Step 3: Cross multiply
    852.09x = 1,175.91 × 553.41
  4. Step 4: Simplify right side
    852.09x = 650,760.35
  5. Step 5: Solve for x
    x = 650,760.35/852.09
  6. Step 6: Final answer
    x = 763.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.