Finding the Fourth Proportional to 186.72, 257.61 and 120.32
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Solution
The fourth proportional to 186.72, 257.61 and 120.32 is: 165.99
Step by Step Solution
- Step 1: Write the proportion equation
186.72 : 257.61 = 120.32 : x - Step 2: Convert to fraction form
186.72/257.61 = 120.32/x - Step 3: Cross multiply
186.72x = 257.61 × 120.32 - Step 4: Simplify right side
186.72x = 30,994.75 - Step 5: Solve for x
x = 30,994.75/186.72 - Step 6: Final answer
x = 165.99
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.