Finding the Fourth Proportional to 421.18, 581.23 and 234.68
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Solution
The fourth proportional to 421.18, 581.23 and 234.68 is: 323.85
Step by Step Solution
- Step 1: Write the proportion equation
421.18 : 581.23 = 234.68 : x - Step 2: Convert to fraction form
421.18/581.23 = 234.68/x - Step 3: Cross multiply
421.18x = 581.23 × 234.68 - Step 4: Simplify right side
421.18x = 136,400.44 - Step 5: Solve for x
x = 136,400.44/421.18 - Step 6: Final answer
x = 323.85
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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.