Finding the Fourth Proportional to 306.40, 459.62 and 289.99
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Solution
The fourth proportional to 306.40, 459.62 and 289.99 is: 435.00
Step by Step Solution
- Step 1: Write the proportion equation
306.40 : 459.62 = 289.99 : x - Step 2: Convert to fraction form
306.40/459.62 = 289.99/x - Step 3: Cross multiply
306.40x = 459.62 × 289.99 - Step 4: Simplify right side
306.40x = 133,285.20 - Step 5: Solve for x
x = 133,285.20/306.40 - Step 6: Final answer
x = 435.00
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.