Finding the Fourth Proportional to 578.30, 797.79 and 368.74
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Solution
The fourth proportional to 578.30, 797.79 and 368.74 is: 508.69
Step by Step Solution
- Step 1: Write the proportion equation
578.30 : 797.79 = 368.74 : x - Step 2: Convert to fraction form
578.30/797.79 = 368.74/x - Step 3: Cross multiply
578.30x = 797.79 × 368.74 - Step 4: Simplify right side
578.30x = 294,177.08 - Step 5: Solve for x
x = 294,177.08/578.30 - Step 6: Final answer
x = 508.69
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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.