Finding the Fourth Proportional to 252.36, 378.54 and 79.02
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Solution
The fourth proportional to 252.36, 378.54 and 79.02 is: 118.53
Step by Step Solution
- Step 1: Write the proportion equation
252.36 : 378.54 = 79.02 : x - Step 2: Convert to fraction form
252.36/378.54 = 79.02/x - Step 3: Cross multiply
252.36x = 378.54 × 79.02 - Step 4: Simplify right side
252.36x = 29,912.23 - Step 5: Solve for x
x = 29,912.23/252.36 - Step 6: Final answer
x = 118.53
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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.