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Finding the Fourth Proportional to 963.15, 1,444.29 and 443.03

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Solution

The fourth proportional to 963.15, 1,444.29 and 443.03 is: 664.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    963.15 : 1,444.29 = 443.03 : x
  2. Step 2: Convert to fraction form
    963.15/1,444.29 = 443.03/x
  3. Step 3: Cross multiply
    963.15x = 1,444.29 × 443.03
  4. Step 4: Simplify right side
    963.15x = 639,856.58
  5. Step 5: Solve for x
    x = 639,856.58/963.15
  6. Step 6: Final answer
    x = 664.34

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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.