Finding the Fourth Proportional to 403.09, 555.90 and 276.99
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Solution
The fourth proportional to 403.09, 555.90 and 276.99 is: 382.00
Step by Step Solution
- Step 1: Write the proportion equation
403.09 : 555.90 = 276.99 : x - Step 2: Convert to fraction form
403.09/555.90 = 276.99/x - Step 3: Cross multiply
403.09x = 555.90 × 276.99 - Step 4: Simplify right side
403.09x = 153,982.65 - Step 5: Solve for x
x = 153,982.65/403.09 - Step 6: Final answer
x = 382.00
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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.