Finding the Fourth Proportional to 252.59, 378.93 and 115.65
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Solution
The fourth proportional to 252.59, 378.93 and 115.65 is: 173.50
Step by Step Solution
- Step 1: Write the proportion equation
252.59 : 378.93 = 115.65 : x - Step 2: Convert to fraction form
252.59/378.93 = 115.65/x - Step 3: Cross multiply
252.59x = 378.93 × 115.65 - Step 4: Simplify right side
252.59x = 43,824.10 - Step 5: Solve for x
x = 43,824.10/252.59 - Step 6: Final answer
x = 173.50
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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.