Finding the Fourth Proportional to 457.75, 631.70 and 319.99
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Solution
The fourth proportional to 457.75, 631.70 and 319.99 is: 441.59
Step by Step Solution
- Step 1: Write the proportion equation
457.75 : 631.70 = 319.99 : x - Step 2: Convert to fraction form
457.75/631.70 = 319.99/x - Step 3: Cross multiply
457.75x = 631.70 × 319.99 - Step 4: Simplify right side
457.75x = 202,137.68 - Step 5: Solve for x
x = 202,137.68/457.75 - Step 6: Final answer
x = 441.59
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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.