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Finding the Fourth Proportional to 643.23, 965.04 and 232.41

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Solution

The fourth proportional to 643.23, 965.04 and 232.41 is: 348.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    643.23 : 965.04 = 232.41 : x
  2. Step 2: Convert to fraction form
    643.23/965.04 = 232.41/x
  3. Step 3: Cross multiply
    643.23x = 965.04 × 232.41
  4. Step 4: Simplify right side
    643.23x = 224,284.95
  5. Step 5: Solve for x
    x = 224,284.95/643.23
  6. Step 6: Final answer
    x = 348.69

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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.