Finding the Fourth Proportional to 248.60, 343.08 and 138.08
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Solution
The fourth proportional to 248.60, 343.08 and 138.08 is: 190.56
Step by Step Solution
- Step 1: Write the proportion equation
248.60 : 343.08 = 138.08 : x - Step 2: Convert to fraction form
248.60/343.08 = 138.08/x - Step 3: Cross multiply
248.60x = 343.08 × 138.08 - Step 4: Simplify right side
248.60x = 47,372.49 - Step 5: Solve for x
x = 47,372.49/248.60 - Step 6: Final answer
x = 190.56
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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.