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Finding the Fourth Proportional to 844.92, 1,267.26 and 434.32

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Solution

The fourth proportional to 844.92, 1,267.26 and 434.32 is: 651.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.92 : 1,267.26 = 434.32 : x
  2. Step 2: Convert to fraction form
    844.92/1,267.26 = 434.32/x
  3. Step 3: Cross multiply
    844.92x = 1,267.26 × 434.32
  4. Step 4: Simplify right side
    844.92x = 550,396.36
  5. Step 5: Solve for x
    x = 550,396.36/844.92
  6. Step 6: Final answer
    x = 651.42

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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.