Finding the Fourth Proportional to 201.74, 278.21 and 170.73
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Solution
The fourth proportional to 201.74, 278.21 and 170.73 is: 235.45
Step by Step Solution
- Step 1: Write the proportion equation
201.74 : 278.21 = 170.73 : x - Step 2: Convert to fraction form
201.74/278.21 = 170.73/x - Step 3: Cross multiply
201.74x = 278.21 × 170.73 - Step 4: Simplify right side
201.74x = 47,499.22 - Step 5: Solve for x
x = 47,499.22/201.74 - Step 6: Final answer
x = 235.45
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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.