Finding the Fourth Proportional to 286.24, 395.06 and 161.90
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Solution
The fourth proportional to 286.24, 395.06 and 161.90 is: 223.45
Step by Step Solution
- Step 1: Write the proportion equation
286.24 : 395.06 = 161.90 : x - Step 2: Convert to fraction form
286.24/395.06 = 161.90/x - Step 3: Cross multiply
286.24x = 395.06 × 161.90 - Step 4: Simplify right side
286.24x = 63,958.24 - Step 5: Solve for x
x = 63,958.24/286.24 - Step 6: Final answer
x = 223.45
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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.