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Finding the Fourth Proportional to 906.41, 1,250.84 and 492.41

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Solution

The fourth proportional to 906.41, 1,250.84 and 492.41 is: 679.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.41 : 1,250.84 = 492.41 : x
  2. Step 2: Convert to fraction form
    906.41/1,250.84 = 492.41/x
  3. Step 3: Cross multiply
    906.41x = 1,250.84 × 492.41
  4. Step 4: Simplify right side
    906.41x = 615,919.87
  5. Step 5: Solve for x
    x = 615,919.87/906.41
  6. Step 6: Final answer
    x = 679.52

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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.