Finding the Fourth Proportional to 395.19, 545.36 and 220.53
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Solution
The fourth proportional to 395.19, 545.36 and 220.53 is: 304.33
Step by Step Solution
- Step 1: Write the proportion equation
395.19 : 545.36 = 220.53 : x - Step 2: Convert to fraction form
395.19/545.36 = 220.53/x - Step 3: Cross multiply
395.19x = 545.36 × 220.53 - Step 4: Simplify right side
395.19x = 120,268.24 - Step 5: Solve for x
x = 120,268.24/395.19 - Step 6: Final answer
x = 304.33
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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.