Finding the Fourth Proportional to 393.99, 591.01 and 133.88
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Solution
The fourth proportional to 393.99, 591.01 and 133.88 is: 200.83
Step by Step Solution
- Step 1: Write the proportion equation
393.99 : 591.01 = 133.88 : x - Step 2: Convert to fraction form
393.99/591.01 = 133.88/x - Step 3: Cross multiply
393.99x = 591.01 × 133.88 - Step 4: Simplify right side
393.99x = 79,125.81 - Step 5: Solve for x
x = 79,125.81/393.99 - Step 6: Final answer
x = 200.83
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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.