Finding the Fourth Proportional to 393.91, 589.82 and 263.70
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Solution
The fourth proportional to 393.91, 589.82 and 263.70 is: 394.85
Step by Step Solution
- Step 1: Write the proportion equation
393.91 : 589.82 = 263.70 : x - Step 2: Convert to fraction form
393.91/589.82 = 263.70/x - Step 3: Cross multiply
393.91x = 589.82 × 263.70 - Step 4: Simplify right side
393.91x = 155,536.19 - Step 5: Solve for x
x = 155,536.19/393.91 - Step 6: Final answer
x = 394.85
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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.