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Finding the Fourth Proportional to 998.05, 1,496.95 and 267.68

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Solution

The fourth proportional to 998.05, 1,496.95 and 267.68 is: 401.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    998.05 : 1,496.95 = 267.68 : x
  2. Step 2: Convert to fraction form
    998.05/1,496.95 = 267.68/x
  3. Step 3: Cross multiply
    998.05x = 1,496.95 × 267.68
  4. Step 4: Simplify right side
    998.05x = 400,703.58
  5. Step 5: Solve for x
    x = 400,703.58/998.05
  6. Step 6: Final answer
    x = 401.49

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.