Finding the Fourth Proportional to 40.45, 55.74 and 37.99
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Solution
The fourth proportional to 40.45, 55.74 and 37.99 is: 52.35
Step by Step Solution
- Step 1: Write the proportion equation
40.45 : 55.74 = 37.99 : x - Step 2: Convert to fraction form
40.45/55.74 = 37.99/x - Step 3: Cross multiply
40.45x = 55.74 × 37.99 - Step 4: Simplify right side
40.45x = 2,117.72 - Step 5: Solve for x
x = 2,117.72/40.45 - Step 6: Final answer
x = 52.35
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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.