Finding the Fourth Proportional to 469.74, 648.08 and 283.09
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Solution
The fourth proportional to 469.74, 648.08 and 283.09 is: 390.57
Step by Step Solution
- Step 1: Write the proportion equation
469.74 : 648.08 = 283.09 : x - Step 2: Convert to fraction form
469.74/648.08 = 283.09/x - Step 3: Cross multiply
469.74x = 648.08 × 283.09 - Step 4: Simplify right side
469.74x = 183,464.97 - Step 5: Solve for x
x = 183,464.97/469.74 - Step 6: Final answer
x = 390.57
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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.