Finding the Fourth Proportional to 463.24, 638.99 and 305.87
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Solution
The fourth proportional to 463.24, 638.99 and 305.87 is: 421.91
Step by Step Solution
- Step 1: Write the proportion equation
463.24 : 638.99 = 305.87 : x - Step 2: Convert to fraction form
463.24/638.99 = 305.87/x - Step 3: Cross multiply
463.24x = 638.99 × 305.87 - Step 4: Simplify right side
463.24x = 195,444.74 - Step 5: Solve for x
x = 195,444.74/463.24 - Step 6: Final answer
x = 421.91
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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.