Finding the Fourth Proportional to 272.70, 409 and 135.70
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Solution
The fourth proportional to 272.70, 409 and 135.70 is: 203.53
Step by Step Solution
- Step 1: Write the proportion equation
272.70 : 409 = 135.70 : x - Step 2: Convert to fraction form
272.70/409 = 135.70/x - Step 3: Cross multiply
272.70x = 409 × 135.70 - Step 4: Simplify right side
272.70x = 55,501.30 - Step 5: Solve for x
x = 55,501.30/272.70 - Step 6: Final answer
x = 203.53
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.