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Finding the Fourth Proportional to 995.66, 1,493.49 and 379.22

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Solution

The fourth proportional to 995.66, 1,493.49 and 379.22 is: 568.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.66 : 1,493.49 = 379.22 : x
  2. Step 2: Convert to fraction form
    995.66/1,493.49 = 379.22/x
  3. Step 3: Cross multiply
    995.66x = 1,493.49 × 379.22
  4. Step 4: Simplify right side
    995.66x = 566,361.28
  5. Step 5: Solve for x
    x = 566,361.28/995.66
  6. Step 6: Final answer
    x = 568.83

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Double scale
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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.