Finding the Fourth Proportional to 221.99, 331.36 and 205.93
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Solution
The fourth proportional to 221.99, 331.36 and 205.93 is: 307.39
Step by Step Solution
- Step 1: Write the proportion equation
221.99 : 331.36 = 205.93 : x - Step 2: Convert to fraction form
221.99/331.36 = 205.93/x - Step 3: Cross multiply
221.99x = 331.36 × 205.93 - Step 4: Simplify right side
221.99x = 68,235.31 - Step 5: Solve for x
x = 68,235.31/221.99 - Step 6: Final answer
x = 307.39
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.