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Finding the Fourth Proportional to 906.92, 1,250.86 and 627.62

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Solution

The fourth proportional to 906.92, 1,250.86 and 627.62 is: 865.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.92 : 1,250.86 = 627.62 : x
  2. Step 2: Convert to fraction form
    906.92/1,250.86 = 627.62/x
  3. Step 3: Cross multiply
    906.92x = 1,250.86 × 627.62
  4. Step 4: Simplify right side
    906.92x = 785,064.75
  5. Step 5: Solve for x
    x = 785,064.75/906.92
  6. Step 6: Final answer
    x = 865.64

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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.