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Finding the Fourth Proportional to 853.67, 1,279.35 and 441.94

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Solution

The fourth proportional to 853.67, 1,279.35 and 441.94 is: 662.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    853.67 : 1,279.35 = 441.94 : x
  2. Step 2: Convert to fraction form
    853.67/1,279.35 = 441.94/x
  3. Step 3: Cross multiply
    853.67x = 1,279.35 × 441.94
  4. Step 4: Simplify right side
    853.67x = 565,392.74
  5. Step 5: Solve for x
    x = 565,392.74/853.67
  6. Step 6: Final answer
    x = 662.31

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Double scale
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1.5x scale

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.