Finding the Fourth Proportional to 457.68, 631.92 and 283.08
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Solution
The fourth proportional to 457.68, 631.92 and 283.08 is: 390.85
Step by Step Solution
- Step 1: Write the proportion equation
457.68 : 631.92 = 283.08 : x - Step 2: Convert to fraction form
457.68/631.92 = 283.08/x - Step 3: Cross multiply
457.68x = 631.92 × 283.08 - Step 4: Simplify right side
457.68x = 178,883.91 - Step 5: Solve for x
x = 178,883.91/457.68 - Step 6: Final answer
x = 390.85
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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.