Finding the Fourth Proportional to 252.69, 378.99 and 70.05
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Solution
The fourth proportional to 252.69, 378.99 and 70.05 is: 105.06
Step by Step Solution
- Step 1: Write the proportion equation
252.69 : 378.99 = 70.05 : x - Step 2: Convert to fraction form
252.69/378.99 = 70.05/x - Step 3: Cross multiply
252.69x = 378.99 × 70.05 - Step 4: Simplify right side
252.69x = 26,548.25 - Step 5: Solve for x
x = 26,548.25/252.69 - Step 6: Final answer
x = 105.06
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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.