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Finding the Fourth Proportional to 995.85, 1,374.32 and 576.23

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Solution

The fourth proportional to 995.85, 1,374.32 and 576.23 is: 795.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.85 : 1,374.32 = 576.23 : x
  2. Step 2: Convert to fraction form
    995.85/1,374.32 = 576.23/x
  3. Step 3: Cross multiply
    995.85x = 1,374.32 × 576.23
  4. Step 4: Simplify right side
    995.85x = 791,918.98
  5. Step 5: Solve for x
    x = 791,918.98/995.85
  6. Step 6: Final answer
    x = 795.22

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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.