Finding the Fourth Proportional to 339.19, 508.65 and 133.68
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Solution
The fourth proportional to 339.19, 508.65 and 133.68 is: 200.47
Step by Step Solution
- Step 1: Write the proportion equation
339.19 : 508.65 = 133.68 : x - Step 2: Convert to fraction form
339.19/508.65 = 133.68/x - Step 3: Cross multiply
339.19x = 508.65 × 133.68 - Step 4: Simplify right side
339.19x = 67,997.74 - Step 5: Solve for x
x = 67,997.74/339.19 - Step 6: Final answer
x = 200.47
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.