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Finding the Fourth Proportional to 842.14, 1,263.22 and 294.33

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Solution

The fourth proportional to 842.14, 1,263.22 and 294.33 is: 441.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    842.14 : 1,263.22 = 294.33 : x
  2. Step 2: Convert to fraction form
    842.14/1,263.22 = 294.33/x
  3. Step 3: Cross multiply
    842.14x = 1,263.22 × 294.33
  4. Step 4: Simplify right side
    842.14x = 371,803.54
  5. Step 5: Solve for x
    x = 371,803.54/842.14
  6. Step 6: Final answer
    x = 441.50

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Double scale
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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.