Finding the Fourth Proportional to 221.84, 332.70 and 84.92
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Solution
The fourth proportional to 221.84, 332.70 and 84.92 is: 127.35
Step by Step Solution
- Step 1: Write the proportion equation
221.84 : 332.70 = 84.92 : x - Step 2: Convert to fraction form
221.84/332.70 = 84.92/x - Step 3: Cross multiply
221.84x = 332.70 × 84.92 - Step 4: Simplify right side
221.84x = 28,252.15 - Step 5: Solve for x
x = 28,252.15/221.84 - Step 6: Final answer
x = 127.35
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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.