Finding the Fourth Proportional to 243.20, 364.88 and 135.08
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Solution
The fourth proportional to 243.20, 364.88 and 135.08 is: 202.66
Step by Step Solution
- Step 1: Write the proportion equation
243.20 : 364.88 = 135.08 : x - Step 2: Convert to fraction form
243.20/364.88 = 135.08/x - Step 3: Cross multiply
243.20x = 364.88 × 135.08 - Step 4: Simplify right side
243.20x = 49,287.99 - Step 5: Solve for x
x = 49,287.99/243.20 - Step 6: Final answer
x = 202.66
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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.