Finding the Fourth Proportional to 4.17, 5.72 and 3.99
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Solution
The fourth proportional to 4.17, 5.72 and 3.99 is: 5.47
Step by Step Solution
- Step 1: Write the proportion equation
4.17 : 5.72 = 3.99 : x - Step 2: Convert to fraction form
4.17/5.72 = 3.99/x - Step 3: Cross multiply
4.17x = 5.72 × 3.99 - Step 4: Simplify right side
4.17x = 22.82 - Step 5: Solve for x
x = 22.82/4.17 - Step 6: Final answer
x = 5.47
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.