Finding the Fourth Proportional to 479.25, 661.37 and 272.25
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Solution
The fourth proportional to 479.25, 661.37 and 272.25 is: 375.71
Step by Step Solution
- Step 1: Write the proportion equation
479.25 : 661.37 = 272.25 : x - Step 2: Convert to fraction form
479.25/661.37 = 272.25/x - Step 3: Cross multiply
479.25x = 661.37 × 272.25 - Step 4: Simplify right side
479.25x = 180,056.62 - Step 5: Solve for x
x = 180,056.62/479.25 - Step 6: Final answer
x = 375.71
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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.