Finding the Fourth Proportional to 40.29, 60.40 and 21.99
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Solution
The fourth proportional to 40.29, 60.40 and 21.99 is: 32.97
Step by Step Solution
- Step 1: Write the proportion equation
40.29 : 60.40 = 21.99 : x - Step 2: Convert to fraction form
40.29/60.40 = 21.99/x - Step 3: Cross multiply
40.29x = 60.40 × 21.99 - Step 4: Simplify right side
40.29x = 1,328.20 - Step 5: Solve for x
x = 1,328.20/40.29 - Step 6: Final answer
x = 32.97
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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.