Finding the Fourth Proportional to 46.42, 69.39 and 40.07
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Solution
The fourth proportional to 46.42, 69.39 and 40.07 is: 59.90
Step by Step Solution
- Step 1: Write the proportion equation
46.42 : 69.39 = 40.07 : x - Step 2: Convert to fraction form
46.42/69.39 = 40.07/x - Step 3: Cross multiply
46.42x = 69.39 × 40.07 - Step 4: Simplify right side
46.42x = 2,780.46 - Step 5: Solve for x
x = 2,780.46/46.42 - Step 6: Final answer
x = 59.90
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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.