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Finding the Fourth Proportional to 995.49, 1,493.19 and 417.96

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Solution

The fourth proportional to 995.49, 1,493.19 and 417.96 is: 626.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.49 : 1,493.19 = 417.96 : x
  2. Step 2: Convert to fraction form
    995.49/1,493.19 = 417.96/x
  3. Step 3: Cross multiply
    995.49x = 1,493.19 × 417.96
  4. Step 4: Simplify right side
    995.49x = 624,093.69
  5. Step 5: Solve for x
    x = 624,093.69/995.49
  6. Step 6: Final answer
    x = 626.92

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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.