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Finding the Fourth Proportional to 995.38, 1,493.83 and 379.51

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Solution

The fourth proportional to 995.38, 1,493.83 and 379.51 is: 569.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.38 : 1,493.83 = 379.51 : x
  2. Step 2: Convert to fraction form
    995.38/1,493.83 = 379.51/x
  3. Step 3: Cross multiply
    995.38x = 1,493.83 × 379.51
  4. Step 4: Simplify right side
    995.38x = 566,923.42
  5. Step 5: Solve for x
    x = 566,923.42/995.38
  6. Step 6: Final answer
    x = 569.55

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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.