Finding the Fourth Proportional to 286.24, 394.84 and 186.68
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Solution
The fourth proportional to 286.24, 394.84 and 186.68 is: 257.51
Step by Step Solution
- Step 1: Write the proportion equation
286.24 : 394.84 = 186.68 : x - Step 2: Convert to fraction form
286.24/394.84 = 186.68/x - Step 3: Cross multiply
286.24x = 394.84 × 186.68 - Step 4: Simplify right side
286.24x = 73,708.73 - Step 5: Solve for x
x = 73,708.73/286.24 - Step 6: Final answer
x = 257.51
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.