Finding the Fourth Proportional to 228.99, 315.75 and 163.38
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Solution
The fourth proportional to 228.99, 315.75 and 163.38 is: 225.28
Step by Step Solution
- Step 1: Write the proportion equation
228.99 : 315.75 = 163.38 : x - Step 2: Convert to fraction form
228.99/315.75 = 163.38/x - Step 3: Cross multiply
228.99x = 315.75 × 163.38 - Step 4: Simplify right side
228.99x = 51,587.24 - Step 5: Solve for x
x = 51,587.24/228.99 - Step 6: Final answer
x = 225.28
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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.