Finding the Fourth Proportional to 307.99, 424.99 and 197.62
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Solution
The fourth proportional to 307.99, 424.99 and 197.62 is: 272.69
Step by Step Solution
- Step 1: Write the proportion equation
307.99 : 424.99 = 197.62 : x - Step 2: Convert to fraction form
307.99/424.99 = 197.62/x - Step 3: Cross multiply
307.99x = 424.99 × 197.62 - Step 4: Simplify right side
307.99x = 83,984.47 - Step 5: Solve for x
x = 83,984.47/307.99 - Step 6: Final answer
x = 272.69
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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.