Finding the Fourth Proportional to 253.24, 349.47 and 154.99
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Solution
The fourth proportional to 253.24, 349.47 and 154.99 is: 213.88
Step by Step Solution
- Step 1: Write the proportion equation
253.24 : 349.47 = 154.99 : x - Step 2: Convert to fraction form
253.24/349.47 = 154.99/x - Step 3: Cross multiply
253.24x = 349.47 × 154.99 - Step 4: Simplify right side
253.24x = 54,163.48 - Step 5: Solve for x
x = 54,163.48/253.24 - Step 6: Final answer
x = 213.88
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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.