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Finding the Fourth Proportional to 995.98, 1,375.10 and 934.02

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Solution

The fourth proportional to 995.98, 1,375.10 and 934.02 is: 1,289.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.98 : 1,375.10 = 934.02 : x
  2. Step 2: Convert to fraction form
    995.98/1,375.10 = 934.02/x
  3. Step 3: Cross multiply
    995.98x = 1,375.10 × 934.02
  4. Step 4: Simplify right side
    995.98x = 1,284,370.90
  5. Step 5: Solve for x
    x = 1,284,370.90/995.98
  6. Step 6: Final answer
    x = 1,289.55

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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.