Finding the Fourth Proportional to 400.54, 552.99 and 307.11
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Solution
The fourth proportional to 400.54, 552.99 and 307.11 is: 424.00
Step by Step Solution
- Step 1: Write the proportion equation
400.54 : 552.99 = 307.11 : x - Step 2: Convert to fraction form
400.54/552.99 = 307.11/x - Step 3: Cross multiply
400.54x = 552.99 × 307.11 - Step 4: Simplify right side
400.54x = 169,825.99 - Step 5: Solve for x
x = 169,825.99/400.54 - Step 6: Final answer
x = 424.00
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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.