Finding the Fourth Proportional to 457.93, 631.95 and 261.44
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Solution
The fourth proportional to 457.93, 631.95 and 261.44 is: 360.79
Step by Step Solution
- Step 1: Write the proportion equation
457.93 : 631.95 = 261.44 : x - Step 2: Convert to fraction form
457.93/631.95 = 261.44/x - Step 3: Cross multiply
457.93x = 631.95 × 261.44 - Step 4: Simplify right side
457.93x = 165,217.01 - Step 5: Solve for x
x = 165,217.01/457.93 - Step 6: Final answer
x = 360.79
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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.