Finding the Fourth Proportional to 286.88, 395.84 and 188.75
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Solution
The fourth proportional to 286.88, 395.84 and 188.75 is: 260.45
Step by Step Solution
- Step 1: Write the proportion equation
286.88 : 395.84 = 188.75 : x - Step 2: Convert to fraction form
286.88/395.84 = 188.75/x - Step 3: Cross multiply
286.88x = 395.84 × 188.75 - Step 4: Simplify right side
286.88x = 74,716.26 - Step 5: Solve for x
x = 74,716.26/286.88 - Step 6: Final answer
x = 260.45
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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.