Finding the Fourth Proportional to 40.08, 55.24 and 31.92
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Solution
The fourth proportional to 40.08, 55.24 and 31.92 is: 43.99
Step by Step Solution
- Step 1: Write the proportion equation
40.08 : 55.24 = 31.92 : x - Step 2: Convert to fraction form
40.08/55.24 = 31.92/x - Step 3: Cross multiply
40.08x = 55.24 × 31.92 - Step 4: Simplify right side
40.08x = 1,763.26 - Step 5: Solve for x
x = 1,763.26/40.08 - Step 6: Final answer
x = 43.99
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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.