Finding the Fourth Proportional to 221.26, 305.34 and 133.91
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Solution
The fourth proportional to 221.26, 305.34 and 133.91 is: 184.80
Step by Step Solution
- Step 1: Write the proportion equation
221.26 : 305.34 = 133.91 : x - Step 2: Convert to fraction form
221.26/305.34 = 133.91/x - Step 3: Cross multiply
221.26x = 305.34 × 133.91 - Step 4: Simplify right side
221.26x = 40,888.08 - Step 5: Solve for x
x = 40,888.08/221.26 - Step 6: Final answer
x = 184.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.