Finding the Fourth Proportional to 221.58, 332.44 and 84.69
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Solution
The fourth proportional to 221.58, 332.44 and 84.69 is: 127.06
Step by Step Solution
- Step 1: Write the proportion equation
221.58 : 332.44 = 84.69 : x - Step 2: Convert to fraction form
221.58/332.44 = 84.69/x - Step 3: Cross multiply
221.58x = 332.44 × 84.69 - Step 4: Simplify right side
221.58x = 28,154.13 - Step 5: Solve for x
x = 28,154.13/221.58 - Step 6: Final answer
x = 127.06
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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.