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Finding the Fourth Proportional to 967.23, 1,335.33 and 636.21

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Solution

The fourth proportional to 967.23, 1,335.33 and 636.21 is: 878.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.23 : 1,335.33 = 636.21 : x
  2. Step 2: Convert to fraction form
    967.23/1,335.33 = 636.21/x
  3. Step 3: Cross multiply
    967.23x = 1,335.33 × 636.21
  4. Step 4: Simplify right side
    967.23x = 849,550.30
  5. Step 5: Solve for x
    x = 849,550.30/967.23
  6. Step 6: Final answer
    x = 878.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.