Finding the Fourth Proportional to 345.11, 476.26 and 220.74
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Solution
The fourth proportional to 345.11, 476.26 and 220.74 is: 304.63
Step by Step Solution
- Step 1: Write the proportion equation
345.11 : 476.26 = 220.74 : x - Step 2: Convert to fraction form
345.11/476.26 = 220.74/x - Step 3: Cross multiply
345.11x = 476.26 × 220.74 - Step 4: Simplify right side
345.11x = 105,129.08 - Step 5: Solve for x
x = 105,129.08/345.11 - Step 6: Final answer
x = 304.63
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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.