Finding the Fourth Proportional to 201.61, 278.19 and 113.08
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Solution
The fourth proportional to 201.61, 278.19 and 113.08 is: 156.03
Step by Step Solution
- Step 1: Write the proportion equation
201.61 : 278.19 = 113.08 : x - Step 2: Convert to fraction form
201.61/278.19 = 113.08/x - Step 3: Cross multiply
201.61x = 278.19 × 113.08 - Step 4: Simplify right side
201.61x = 31,457.73 - Step 5: Solve for x
x = 31,457.73/201.61 - Step 6: Final answer
x = 156.03
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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.