Finding the Fourth Proportional to 339.24, 508.70 and 122.70
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Solution
The fourth proportional to 339.24, 508.70 and 122.70 is: 183.99
Step by Step Solution
- Step 1: Write the proportion equation
339.24 : 508.70 = 122.70 : x - Step 2: Convert to fraction form
339.24/508.70 = 122.70/x - Step 3: Cross multiply
339.24x = 508.70 × 122.70 - Step 4: Simplify right side
339.24x = 62,417.49 - Step 5: Solve for x
x = 62,417.49/339.24 - Step 6: Final answer
x = 183.99
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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.