Finding the Fourth Proportional to 42.06, 62.74 and 40.08
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Solution
The fourth proportional to 42.06, 62.74 and 40.08 is: 59.79
Step by Step Solution
- Step 1: Write the proportion equation
42.06 : 62.74 = 40.08 : x - Step 2: Convert to fraction form
42.06/62.74 = 40.08/x - Step 3: Cross multiply
42.06x = 62.74 × 40.08 - Step 4: Simplify right side
42.06x = 2,514.62 - Step 5: Solve for x
x = 2,514.62/42.06 - Step 6: Final answer
x = 59.79
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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.