Finding the Fourth Proportional to 457.18, 630.84 and 270.68
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Solution
The fourth proportional to 457.18, 630.84 and 270.68 is: 373.50
Step by Step Solution
- Step 1: Write the proportion equation
457.18 : 630.84 = 270.68 : x - Step 2: Convert to fraction form
457.18/630.84 = 270.68/x - Step 3: Cross multiply
457.18x = 630.84 × 270.68 - Step 4: Simplify right side
457.18x = 170,753.63 - Step 5: Solve for x
x = 170,753.63/457.18 - Step 6: Final answer
x = 373.50
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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.