Finding the Fourth Proportional to 228.23, 342.21 and 122.55
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Solution
The fourth proportional to 228.23, 342.21 and 122.55 is: 183.76
Step by Step Solution
- Step 1: Write the proportion equation
228.23 : 342.21 = 122.55 : x - Step 2: Convert to fraction form
228.23/342.21 = 122.55/x - Step 3: Cross multiply
228.23x = 342.21 × 122.55 - Step 4: Simplify right side
228.23x = 41,937.84 - Step 5: Solve for x
x = 41,937.84/228.23 - Step 6: Final answer
x = 183.76
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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.