Finding the Fourth Proportional to 395.99, 545.91 and 248.53
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Solution
The fourth proportional to 395.99, 545.91 and 248.53 is: 342.62
Step by Step Solution
- Step 1: Write the proportion equation
395.99 : 545.91 = 248.53 : x - Step 2: Convert to fraction form
395.99/545.91 = 248.53/x - Step 3: Cross multiply
395.99x = 545.91 × 248.53 - Step 4: Simplify right side
395.99x = 135,672.28 - Step 5: Solve for x
x = 135,672.28/395.99 - Step 6: Final answer
x = 342.62
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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.