Finding the Fourth Proportional to 519.51, 716.95 and 309.62
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Solution
The fourth proportional to 519.51, 716.95 and 309.62 is: 427.29
Step by Step Solution
- Step 1: Write the proportion equation
519.51 : 716.95 = 309.62 : x - Step 2: Convert to fraction form
519.51/716.95 = 309.62/x - Step 3: Cross multiply
519.51x = 716.95 × 309.62 - Step 4: Simplify right side
519.51x = 221,984.24 - Step 5: Solve for x
x = 221,984.24/519.51 - Step 6: Final answer
x = 427.29
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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.