Finding the Fourth Proportional to 252.77, 378.93 and 98.62
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Solution
The fourth proportional to 252.77, 378.93 and 98.62 is: 147.84
Step by Step Solution
- Step 1: Write the proportion equation
252.77 : 378.93 = 98.62 : x - Step 2: Convert to fraction form
252.77/378.93 = 98.62/x - Step 3: Cross multiply
252.77x = 378.93 × 98.62 - Step 4: Simplify right side
252.77x = 37,368.94 - Step 5: Solve for x
x = 37,368.94/252.77 - Step 6: Final answer
x = 147.84
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.