Finding the Fourth Proportional to 29.63, 40.62 and 29.09
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Solution
The fourth proportional to 29.63, 40.62 and 29.09 is: 39.88
Step by Step Solution
- Step 1: Write the proportion equation
29.63 : 40.62 = 29.09 : x - Step 2: Convert to fraction form
29.63/40.62 = 29.09/x - Step 3: Cross multiply
29.63x = 40.62 × 29.09 - Step 4: Simplify right side
29.63x = 1,181.71 - Step 5: Solve for x
x = 1,181.71/29.63 - Step 6: Final answer
x = 39.88
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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.