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Finding the Fourth Proportional to 721.26, 994.50 and 682.35

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Solution

The fourth proportional to 721.26, 994.50 and 682.35 is: 940.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    721.26 : 994.50 = 682.35 : x
  2. Step 2: Convert to fraction form
    721.26/994.50 = 682.35/x
  3. Step 3: Cross multiply
    721.26x = 994.50 × 682.35
  4. Step 4: Simplify right side
    721.26x = 678,597.08
  5. Step 5: Solve for x
    x = 678,597.08/721.26
  6. Step 6: Final answer
    x = 940.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.