Finding the Fourth Proportional to 124.05, 186.05 and 38.55
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Solution
The fourth proportional to 124.05, 186.05 and 38.55 is: 57.82
Step by Step Solution
- Step 1: Write the proportion equation
124.05 : 186.05 = 38.55 : x - Step 2: Convert to fraction form
124.05/186.05 = 38.55/x - Step 3: Cross multiply
124.05x = 186.05 × 38.55 - Step 4: Simplify right side
124.05x = 7,172.23 - Step 5: Solve for x
x = 7,172.23/124.05 - Step 6: Final answer
x = 57.82
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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.