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Finding the Fourth Proportional to 894.87, 1,342.34 and 636.03

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Solution

The fourth proportional to 894.87, 1,342.34 and 636.03 is: 954.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.87 : 1,342.34 = 636.03 : x
  2. Step 2: Convert to fraction form
    894.87/1,342.34 = 636.03/x
  3. Step 3: Cross multiply
    894.87x = 1,342.34 × 636.03
  4. Step 4: Simplify right side
    894.87x = 853,765.33
  5. Step 5: Solve for x
    x = 853,765.33/894.87
  6. Step 6: Final answer
    x = 954.07

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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.