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Finding the Fourth Proportional to 701.33, 967.98 and 421.80

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Solution

The fourth proportional to 701.33, 967.98 and 421.80 is: 582.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.33 : 967.98 = 421.80 : x
  2. Step 2: Convert to fraction form
    701.33/967.98 = 421.80/x
  3. Step 3: Cross multiply
    701.33x = 967.98 × 421.80
  4. Step 4: Simplify right side
    701.33x = 408,293.96
  5. Step 5: Solve for x
    x = 408,293.96/701.33
  6. Step 6: Final answer
    x = 582.18

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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.