Finding the Fourth Proportional to 243.70, 365.55 and 135.70
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Solution
The fourth proportional to 243.70, 365.55 and 135.70 is: 203.55
Step by Step Solution
- Step 1: Write the proportion equation
243.70 : 365.55 = 135.70 : x - Step 2: Convert to fraction form
243.70/365.55 = 135.70/x - Step 3: Cross multiply
243.70x = 365.55 × 135.70 - Step 4: Simplify right side
243.70x = 49,605.14 - Step 5: Solve for x
x = 49,605.14/243.70 - Step 6: Final answer
x = 203.55
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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.