Finding the Fourth Proportional to 228.96, 342.96 and 100.80
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Solution
The fourth proportional to 228.96, 342.96 and 100.80 is: 150.99
Step by Step Solution
- Step 1: Write the proportion equation
228.96 : 342.96 = 100.80 : x - Step 2: Convert to fraction form
228.96/342.96 = 100.80/x - Step 3: Cross multiply
228.96x = 342.96 × 100.80 - Step 4: Simplify right side
228.96x = 34,570.37 - Step 5: Solve for x
x = 34,570.37/228.96 - Step 6: Final answer
x = 150.99
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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.