Finding the Fourth Proportional to 201.75, 278.47 and 131.99
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Solution
The fourth proportional to 201.75, 278.47 and 131.99 is: 182.18
Step by Step Solution
- Step 1: Write the proportion equation
201.75 : 278.47 = 131.99 : x - Step 2: Convert to fraction form
201.75/278.47 = 131.99/x - Step 3: Cross multiply
201.75x = 278.47 × 131.99 - Step 4: Simplify right side
201.75x = 36,753.86 - Step 5: Solve for x
x = 36,753.86/201.75 - Step 6: Final answer
x = 182.18
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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.