Finding the Fourth Proportional to 221.91, 332.74 and 84.87
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Solution
The fourth proportional to 221.91, 332.74 and 84.87 is: 127.27
Step by Step Solution
- Step 1: Write the proportion equation
221.91 : 332.74 = 84.87 : x - Step 2: Convert to fraction form
221.91/332.74 = 84.87/x - Step 3: Cross multiply
221.91x = 332.74 × 84.87 - Step 4: Simplify right side
221.91x = 28,241.10 - Step 5: Solve for x
x = 28,241.10/221.91 - Step 6: Final answer
x = 127.27
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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.