Finding the Fourth Proportional to 395.79, 546.18 and 229.99
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Solution
The fourth proportional to 395.79, 546.18 and 229.99 is: 317.38
Step by Step Solution
- Step 1: Write the proportion equation
395.79 : 546.18 = 229.99 : x - Step 2: Convert to fraction form
395.79/546.18 = 229.99/x - Step 3: Cross multiply
395.79x = 546.18 × 229.99 - Step 4: Simplify right side
395.79x = 125,615.94 - Step 5: Solve for x
x = 125,615.94/395.79 - Step 6: Final answer
x = 317.38
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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.