Finding the Fourth Proportional to 467.93, 643.79 and 456.99
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Solution
The fourth proportional to 467.93, 643.79 and 456.99 is: 628.74
Step by Step Solution
- Step 1: Write the proportion equation
467.93 : 643.79 = 456.99 : x - Step 2: Convert to fraction form
467.93/643.79 = 456.99/x - Step 3: Cross multiply
467.93x = 643.79 × 456.99 - Step 4: Simplify right side
467.93x = 294,203.31 - Step 5: Solve for x
x = 294,203.31/467.93 - Step 6: Final answer
x = 628.74
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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.