Finding the Fourth Proportional to 420.68, 580.62 and 246.08
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Solution
The fourth proportional to 420.68, 580.62 and 246.08 is: 339.64
Step by Step Solution
- Step 1: Write the proportion equation
420.68 : 580.62 = 246.08 : x - Step 2: Convert to fraction form
420.68/580.62 = 246.08/x - Step 3: Cross multiply
420.68x = 580.62 × 246.08 - Step 4: Simplify right side
420.68x = 142,878.97 - Step 5: Solve for x
x = 142,878.97/420.68 - Step 6: Final answer
x = 339.64
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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.