Finding the Fourth Proportional to 221.76, 332.52 and 149.70
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Solution
The fourth proportional to 221.76, 332.52 and 149.70 is: 224.47
Step by Step Solution
- Step 1: Write the proportion equation
221.76 : 332.52 = 149.70 : x - Step 2: Convert to fraction form
221.76/332.52 = 149.70/x - Step 3: Cross multiply
221.76x = 332.52 × 149.70 - Step 4: Simplify right side
221.76x = 49,778.24 - Step 5: Solve for x
x = 49,778.24/221.76 - Step 6: Final answer
x = 224.47
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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.