Finding the Fourth Proportional to 228.44, 315.18 and 149.88
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Solution
The fourth proportional to 228.44, 315.18 and 149.88 is: 206.79
Step by Step Solution
- Step 1: Write the proportion equation
228.44 : 315.18 = 149.88 : x - Step 2: Convert to fraction form
228.44/315.18 = 149.88/x - Step 3: Cross multiply
228.44x = 315.18 × 149.88 - Step 4: Simplify right side
228.44x = 47,239.18 - Step 5: Solve for x
x = 47,239.18/228.44 - Step 6: Final answer
x = 206.79
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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.