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Finding the Fourth Proportional to 950.73, 1,310.19 and 684.70

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Solution

The fourth proportional to 950.73, 1,310.19 and 684.70 is: 943.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.73 : 1,310.19 = 684.70 : x
  2. Step 2: Convert to fraction form
    950.73/1,310.19 = 684.70/x
  3. Step 3: Cross multiply
    950.73x = 1,310.19 × 684.70
  4. Step 4: Simplify right side
    950.73x = 897,086.86
  5. Step 5: Solve for x
    x = 897,086.86/950.73
  6. Step 6: Final answer
    x = 943.58

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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.