Finding the Fourth Proportional to 390.08, 537.62 and 296.61
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Solution
The fourth proportional to 390.08, 537.62 and 296.61 is: 408.80
Step by Step Solution
- Step 1: Write the proportion equation
390.08 : 537.62 = 296.61 : x - Step 2: Convert to fraction form
390.08/537.62 = 296.61/x - Step 3: Cross multiply
390.08x = 537.62 × 296.61 - Step 4: Simplify right side
390.08x = 159,461.99 - Step 5: Solve for x
x = 159,461.99/390.08 - Step 6: Final answer
x = 408.80
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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.