Finding the Fourth Proportional to 504.18, 756.21 and 138.99
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Solution
The fourth proportional to 504.18, 756.21 and 138.99 is: 208.47
Step by Step Solution
- Step 1: Write the proportion equation
504.18 : 756.21 = 138.99 : x - Step 2: Convert to fraction form
504.18/756.21 = 138.99/x - Step 3: Cross multiply
504.18x = 756.21 × 138.99 - Step 4: Simplify right side
504.18x = 105,105.63 - Step 5: Solve for x
x = 105,105.63/504.18 - Step 6: Final answer
x = 208.47
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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.