Finding the Fourth Proportional to 201.75, 278.64 and 143.84
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Solution
The fourth proportional to 201.75, 278.64 and 143.84 is: 198.65
Step by Step Solution
- Step 1: Write the proportion equation
201.75 : 278.64 = 143.84 : x - Step 2: Convert to fraction form
201.75/278.64 = 143.84/x - Step 3: Cross multiply
201.75x = 278.64 × 143.84 - Step 4: Simplify right side
201.75x = 40,078.18 - Step 5: Solve for x
x = 40,078.18/201.75 - Step 6: Final answer
x = 198.65
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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.