Finding the Fourth Proportional to 135.18, 201.92 and 115.74
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Solution
The fourth proportional to 135.18, 201.92 and 115.74 is: 172.88
Step by Step Solution
- Step 1: Write the proportion equation
135.18 : 201.92 = 115.74 : x - Step 2: Convert to fraction form
135.18/201.92 = 115.74/x - Step 3: Cross multiply
135.18x = 201.92 × 115.74 - Step 4: Simplify right side
135.18x = 23,369.64 - Step 5: Solve for x
x = 23,369.64/135.18 - Step 6: Final answer
x = 172.88
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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.