Finding the Fourth Proportional to 180.60, 249.21 and 115.08
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Solution
The fourth proportional to 180.60, 249.21 and 115.08 is: 158.80
Step by Step Solution
- Step 1: Write the proportion equation
180.60 : 249.21 = 115.08 : x - Step 2: Convert to fraction form
180.60/249.21 = 115.08/x - Step 3: Cross multiply
180.60x = 249.21 × 115.08 - Step 4: Simplify right side
180.60x = 28,679.09 - Step 5: Solve for x
x = 28,679.09/180.60 - Step 6: Final answer
x = 158.80
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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.