Finding the Fourth Proportional to 221.64, 332.36 and 118.96
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Solution
The fourth proportional to 221.64, 332.36 and 118.96 is: 178.39
Step by Step Solution
- Step 1: Write the proportion equation
221.64 : 332.36 = 118.96 : x - Step 2: Convert to fraction form
221.64/332.36 = 118.96/x - Step 3: Cross multiply
221.64x = 332.36 × 118.96 - Step 4: Simplify right side
221.64x = 39,537.55 - Step 5: Solve for x
x = 39,537.55/221.64 - Step 6: Final answer
x = 178.39
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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.