Finding the Fourth Proportional to 221.24, 332.08 and 129.84
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Solution
The fourth proportional to 221.24, 332.08 and 129.84 is: 194.89
Step by Step Solution
- Step 1: Write the proportion equation
221.24 : 332.08 = 129.84 : x - Step 2: Convert to fraction form
221.24/332.08 = 129.84/x - Step 3: Cross multiply
221.24x = 332.08 × 129.84 - Step 4: Simplify right side
221.24x = 43,117.27 - Step 5: Solve for x
x = 43,117.27/221.24 - Step 6: Final answer
x = 194.89
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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.