Finding the Fourth Proportional to 420.73, 630.97 and 177.11
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Solution
The fourth proportional to 420.73, 630.97 and 177.11 is: 265.61
Step by Step Solution
- Step 1: Write the proportion equation
420.73 : 630.97 = 177.11 : x - Step 2: Convert to fraction form
420.73/630.97 = 177.11/x - Step 3: Cross multiply
420.73x = 630.97 × 177.11 - Step 4: Simplify right side
420.73x = 111,751.10 - Step 5: Solve for x
x = 111,751.10/420.73 - Step 6: Final answer
x = 265.61
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.