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Finding the Fourth Proportional to 967.23, 1,453.68 and 644.85

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Solution

The fourth proportional to 967.23, 1,453.68 and 644.85 is: 969.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.23 : 1,453.68 = 644.85 : x
  2. Step 2: Convert to fraction form
    967.23/1,453.68 = 644.85/x
  3. Step 3: Cross multiply
    967.23x = 1,453.68 × 644.85
  4. Step 4: Simplify right side
    967.23x = 937,405.55
  5. Step 5: Solve for x
    x = 937,405.55/967.23
  6. Step 6: Final answer
    x = 969.17

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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.