Finding the Fourth Proportional to 46.08, 68.79 and 39.99
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Solution
The fourth proportional to 46.08, 68.79 and 39.99 is: 59.70
Step by Step Solution
- Step 1: Write the proportion equation
46.08 : 68.79 = 39.99 : x - Step 2: Convert to fraction form
46.08/68.79 = 39.99/x - Step 3: Cross multiply
46.08x = 68.79 × 39.99 - Step 4: Simplify right side
46.08x = 2,750.91 - Step 5: Solve for x
x = 2,750.91/46.08 - Step 6: Final answer
x = 59.70
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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.