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Finding the Fourth Proportional to 853.26, 1,279.91 and 366.32

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Solution

The fourth proportional to 853.26, 1,279.91 and 366.32 is: 549.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    853.26 : 1,279.91 = 366.32 : x
  2. Step 2: Convert to fraction form
    853.26/1,279.91 = 366.32/x
  3. Step 3: Cross multiply
    853.26x = 1,279.91 × 366.32
  4. Step 4: Simplify right side
    853.26x = 468,848.40
  5. Step 5: Solve for x
    x = 468,848.40/853.26
  6. Step 6: Final answer
    x = 549.48

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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.