Finding the Fourth Proportional to 286.23, 394.98 and 193.19
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Solution
The fourth proportional to 286.23, 394.98 and 193.19 is: 266.58
Step by Step Solution
- Step 1: Write the proportion equation
286.23 : 394.98 = 193.19 : x - Step 2: Convert to fraction form
286.23/394.98 = 193.19/x - Step 3: Cross multiply
286.23x = 394.98 × 193.19 - Step 4: Simplify right side
286.23x = 76,303.49 - Step 5: Solve for x
x = 76,303.49/286.23 - Step 6: Final answer
x = 266.58
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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.