Finding the Fourth Proportional to 221.70, 332.55 and 202.80
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Solution
The fourth proportional to 221.70, 332.55 and 202.80 is: 304.20
Step by Step Solution
- Step 1: Write the proportion equation
221.70 : 332.55 = 202.80 : x - Step 2: Convert to fraction form
221.70/332.55 = 202.80/x - Step 3: Cross multiply
221.70x = 332.55 × 202.80 - Step 4: Simplify right side
221.70x = 67,441.14 - Step 5: Solve for x
x = 67,441.14/221.70 - Step 6: Final answer
x = 304.20
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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.