Finding the Fourth Proportional to 421.83, 581.99 and 255.99
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Solution
The fourth proportional to 421.83, 581.99 and 255.99 is: 353.18
Step by Step Solution
- Step 1: Write the proportion equation
421.83 : 581.99 = 255.99 : x - Step 2: Convert to fraction form
421.83/581.99 = 255.99/x - Step 3: Cross multiply
421.83x = 581.99 × 255.99 - Step 4: Simplify right side
421.83x = 148,982.34 - Step 5: Solve for x
x = 148,982.34/421.83 - Step 6: Final answer
x = 353.18
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.