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Finding the Fourth Proportional to 964.36, 1,447.35 and 531.82

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Solution

The fourth proportional to 964.36, 1,447.35 and 531.82 is: 798.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.36 : 1,447.35 = 531.82 : x
  2. Step 2: Convert to fraction form
    964.36/1,447.35 = 531.82/x
  3. Step 3: Cross multiply
    964.36x = 1,447.35 × 531.82
  4. Step 4: Simplify right side
    964.36x = 769,729.68
  5. Step 5: Solve for x
    x = 769,729.68/964.36
  6. Step 6: Final answer
    x = 798.18

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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.