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Finding the Fourth Proportional to 995.21, 1,373.41 and 575.57

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Solution

The fourth proportional to 995.21, 1,373.41 and 575.57 is: 794.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.21 : 1,373.41 = 575.57 : x
  2. Step 2: Convert to fraction form
    995.21/1,373.41 = 575.57/x
  3. Step 3: Cross multiply
    995.21x = 1,373.41 × 575.57
  4. Step 4: Simplify right side
    995.21x = 790,493.59
  5. Step 5: Solve for x
    x = 790,493.59/995.21
  6. Step 6: Final answer
    x = 794.30

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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.