Finding the Fourth Proportional to 247.12, 341.18 and 153.99
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Solution
The fourth proportional to 247.12, 341.18 and 153.99 is: 212.61
Step by Step Solution
- Step 1: Write the proportion equation
247.12 : 341.18 = 153.99 : x - Step 2: Convert to fraction form
247.12/341.18 = 153.99/x - Step 3: Cross multiply
247.12x = 341.18 × 153.99 - Step 4: Simplify right side
247.12x = 52,539.12 - Step 5: Solve for x
x = 52,539.12/247.12 - Step 6: Final answer
x = 212.61
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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.