Finding the Fourth Proportional to 228.99, 343.53 and 84.70
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Solution
The fourth proportional to 228.99, 343.53 and 84.70 is: 127.07
Step by Step Solution
- Step 1: Write the proportion equation
228.99 : 343.53 = 84.70 : x - Step 2: Convert to fraction form
228.99/343.53 = 84.70/x - Step 3: Cross multiply
228.99x = 343.53 × 84.70 - Step 4: Simplify right side
228.99x = 29,096.99 - Step 5: Solve for x
x = 29,096.99/228.99 - Step 6: Final answer
x = 127.07
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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.