Finding the Fourth Proportional to 234.20, 323.21 and 135.99
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Solution
The fourth proportional to 234.20, 323.21 and 135.99 is: 187.67
Step by Step Solution
- Step 1: Write the proportion equation
234.20 : 323.21 = 135.99 : x - Step 2: Convert to fraction form
234.20/323.21 = 135.99/x - Step 3: Cross multiply
234.20x = 323.21 × 135.99 - Step 4: Simplify right side
234.20x = 43,953.67 - Step 5: Solve for x
x = 43,953.67/234.20 - Step 6: Final answer
x = 187.67
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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.