Finding the Fourth Proportional to 431.33, 647.19 and 225.99
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Solution
The fourth proportional to 431.33, 647.19 and 225.99 is: 339.09
Step by Step Solution
- Step 1: Write the proportion equation
431.33 : 647.19 = 225.99 : x - Step 2: Convert to fraction form
431.33/647.19 = 225.99/x - Step 3: Cross multiply
431.33x = 647.19 × 225.99 - Step 4: Simplify right side
431.33x = 146,258.47 - Step 5: Solve for x
x = 146,258.47/431.33 - Step 6: Final answer
x = 339.09
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.