Finding the Fourth Proportional to 218.93, 302.08 and 120.68
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Solution
The fourth proportional to 218.93, 302.08 and 120.68 is: 166.51
Step by Step Solution
- Step 1: Write the proportion equation
218.93 : 302.08 = 120.68 : x - Step 2: Convert to fraction form
218.93/302.08 = 120.68/x - Step 3: Cross multiply
218.93x = 302.08 × 120.68 - Step 4: Simplify right side
218.93x = 36,455.01 - Step 5: Solve for x
x = 36,455.01/218.93 - Step 6: Final answer
x = 166.51
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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.