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Finding the Fourth Proportional to 292.75, 403.96 and 161.74

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Solution

The fourth proportional to 292.75, 403.96 and 161.74 is: 223.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.75 : 403.96 = 161.74 : x
  2. Step 2: Convert to fraction form
    292.75/403.96 = 161.74/x
  3. Step 3: Cross multiply
    292.75x = 403.96 × 161.74
  4. Step 4: Simplify right side
    292.75x = 65,336.49
  5. Step 5: Solve for x
    x = 65,336.49/292.75
  6. Step 6: Final answer
    x = 223.18

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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.