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Finding the Fourth Proportional to 967.88, 1,450.41 and 724.28

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Solution

The fourth proportional to 967.88, 1,450.41 and 724.28 is: 1,085.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.88 : 1,450.41 = 724.28 : x
  2. Step 2: Convert to fraction form
    967.88/1,450.41 = 724.28/x
  3. Step 3: Cross multiply
    967.88x = 1,450.41 × 724.28
  4. Step 4: Simplify right side
    967.88x = 1,050,502.95
  5. Step 5: Solve for x
    x = 1,050,502.95/967.88
  6. Step 6: Final answer
    x = 1,085.36

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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.