Finding the Fourth Proportional to 243.99, 365.99 and 99.70
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Solution
The fourth proportional to 243.99, 365.99 and 99.70 is: 149.55
Step by Step Solution
- Step 1: Write the proportion equation
243.99 : 365.99 = 99.70 : x - Step 2: Convert to fraction form
243.99/365.99 = 99.70/x - Step 3: Cross multiply
243.99x = 365.99 × 99.70 - Step 4: Simplify right side
243.99x = 36,487.79 - Step 5: Solve for x
x = 36,487.79/243.99 - Step 6: Final answer
x = 149.55
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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.