Finding the Fourth Proportional to 286.25, 394.99 and 161.87
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Solution
The fourth proportional to 286.25, 394.99 and 161.87 is: 223.36
Step by Step Solution
- Step 1: Write the proportion equation
286.25 : 394.99 = 161.87 : x - Step 2: Convert to fraction form
286.25/394.99 = 161.87/x - Step 3: Cross multiply
286.25x = 394.99 × 161.87 - Step 4: Simplify right side
286.25x = 63,937.03 - Step 5: Solve for x
x = 63,937.03/286.25 - Step 6: Final answer
x = 223.36
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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.