Finding the Fourth Proportional to 421.26, 581.42 and 346.08
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Solution
The fourth proportional to 421.26, 581.42 and 346.08 is: 477.65
Step by Step Solution
- Step 1: Write the proportion equation
421.26 : 581.42 = 346.08 : x - Step 2: Convert to fraction form
421.26/581.42 = 346.08/x - Step 3: Cross multiply
421.26x = 581.42 × 346.08 - Step 4: Simplify right side
421.26x = 201,216.10 - Step 5: Solve for x
x = 201,216.10/421.26 - Step 6: Final answer
x = 477.65
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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.