Finding the Fourth Proportional to 211.79, 292.44 and 170.21
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Solution
The fourth proportional to 211.79, 292.44 and 170.21 is: 235.03
Step by Step Solution
- Step 1: Write the proportion equation
211.79 : 292.44 = 170.21 : x - Step 2: Convert to fraction form
211.79/292.44 = 170.21/x - Step 3: Cross multiply
211.79x = 292.44 × 170.21 - Step 4: Simplify right side
211.79x = 49,777.58 - Step 5: Solve for x
x = 49,777.58/211.79 - Step 6: Final answer
x = 235.03
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.