Finding the Fourth Proportional to 19.42, 29 and 15.82
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Solution
The fourth proportional to 19.42, 29 and 15.82 is: 23.62
Step by Step Solution
- Step 1: Write the proportion equation
19.42 : 29 = 15.82 : x - Step 2: Convert to fraction form
19.42/29 = 15.82/x - Step 3: Cross multiply
19.42x = 29 × 15.82 - Step 4: Simplify right side
19.42x = 458.78 - Step 5: Solve for x
x = 458.78/19.42 - Step 6: Final answer
x = 23.62
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.