Finding the Fourth Proportional to 252.65, 378.99 and 70.07
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Solution
The fourth proportional to 252.65, 378.99 and 70.07 is: 105.10
Step by Step Solution
- Step 1: Write the proportion equation
252.65 : 378.99 = 70.07 : x - Step 2: Convert to fraction form
252.65/378.99 = 70.07/x - Step 3: Cross multiply
252.65x = 378.99 × 70.07 - Step 4: Simplify right side
252.65x = 26,553.93 - Step 5: Solve for x
x = 26,553.93/252.65 - Step 6: Final answer
x = 105.10
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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.