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Finding the Fourth Proportional to 846.22, 1,269.44 and 480.91

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Solution

The fourth proportional to 846.22, 1,269.44 and 480.91 is: 721.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.22 : 1,269.44 = 480.91 : x
  2. Step 2: Convert to fraction form
    846.22/1,269.44 = 480.91/x
  3. Step 3: Cross multiply
    846.22x = 1,269.44 × 480.91
  4. Step 4: Simplify right side
    846.22x = 610,486.39
  5. Step 5: Solve for x
    x = 610,486.39/846.22
  6. Step 6: Final answer
    x = 721.43

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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.