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Finding the Fourth Proportional to 906.42, 1,250.83 and 626.97

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Solution

The fourth proportional to 906.42, 1,250.83 and 626.97 is: 865.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.42 : 1,250.83 = 626.97 : x
  2. Step 2: Convert to fraction form
    906.42/1,250.83 = 626.97/x
  3. Step 3: Cross multiply
    906.42x = 1,250.83 × 626.97
  4. Step 4: Simplify right side
    906.42x = 784,232.89
  5. Step 5: Solve for x
    x = 784,232.89/906.42
  6. Step 6: Final answer
    x = 865.20

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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.