Finding the Fourth Proportional to 221.68, 332.56 and 119.08
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Solution
The fourth proportional to 221.68, 332.56 and 119.08 is: 178.64
Step by Step Solution
- Step 1: Write the proportion equation
221.68 : 332.56 = 119.08 : x - Step 2: Convert to fraction form
221.68/332.56 = 119.08/x - Step 3: Cross multiply
221.68x = 332.56 × 119.08 - Step 4: Simplify right side
221.68x = 39,599.58 - Step 5: Solve for x
x = 39,599.58/221.68 - Step 6: Final answer
x = 178.64
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.