Finding the Fourth Proportional to 457.80, 631.91 and 261.44
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Solution
The fourth proportional to 457.80, 631.91 and 261.44 is: 360.87
Step by Step Solution
- Step 1: Write the proportion equation
457.80 : 631.91 = 261.44 : x - Step 2: Convert to fraction form
457.80/631.91 = 261.44/x - Step 3: Cross multiply
457.80x = 631.91 × 261.44 - Step 4: Simplify right side
457.80x = 165,205.24 - Step 5: Solve for x
x = 165,205.24/457.80 - Step 6: Final answer
x = 360.87
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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.