Finding the Fourth Proportional to 221.55, 305.69 and 132.99
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Solution
The fourth proportional to 221.55, 305.69 and 132.99 is: 183.49
Step by Step Solution
- Step 1: Write the proportion equation
221.55 : 305.69 = 132.99 : x - Step 2: Convert to fraction form
221.55/305.69 = 132.99/x - Step 3: Cross multiply
221.55x = 305.69 × 132.99 - Step 4: Simplify right side
221.55x = 40,651.90 - Step 5: Solve for x
x = 40,651.90/221.55 - Step 6: Final answer
x = 183.49
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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.