Finding the Fourth Proportional to 180.78, 248.99 and 125.43
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Solution
The fourth proportional to 180.78, 248.99 and 125.43 is: 172.75
Step by Step Solution
- Step 1: Write the proportion equation
180.78 : 248.99 = 125.43 : x - Step 2: Convert to fraction form
180.78/248.99 = 125.43/x - Step 3: Cross multiply
180.78x = 248.99 × 125.43 - Step 4: Simplify right side
180.78x = 31,230.19 - Step 5: Solve for x
x = 31,230.19/180.78 - Step 6: Final answer
x = 172.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.