Finding the Fourth Proportional to 306.41, 423.02 and 206.99
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Solution
The fourth proportional to 306.41, 423.02 and 206.99 is: 285.77
Step by Step Solution
- Step 1: Write the proportion equation
306.41 : 423.02 = 206.99 : x - Step 2: Convert to fraction form
306.41/423.02 = 206.99/x - Step 3: Cross multiply
306.41x = 423.02 × 206.99 - Step 4: Simplify right side
306.41x = 87,561.71 - Step 5: Solve for x
x = 87,561.71/306.41 - Step 6: Final answer
x = 285.77
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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.