Finding the Fourth Proportional to 188.12, 259.62 and 122.68
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Solution
The fourth proportional to 188.12, 259.62 and 122.68 is: 169.31
Step by Step Solution
- Step 1: Write the proportion equation
188.12 : 259.62 = 122.68 : x - Step 2: Convert to fraction form
188.12/259.62 = 122.68/x - Step 3: Cross multiply
188.12x = 259.62 × 122.68 - Step 4: Simplify right side
188.12x = 31,850.18 - Step 5: Solve for x
x = 31,850.18/188.12 - Step 6: Final answer
x = 169.31
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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.