Finding the Fourth Proportional to 345.06, 476.15 and 187.69
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Solution
The fourth proportional to 345.06, 476.15 and 187.69 is: 258.99
Step by Step Solution
- Step 1: Write the proportion equation
345.06 : 476.15 = 187.69 : x - Step 2: Convert to fraction form
345.06/476.15 = 187.69/x - Step 3: Cross multiply
345.06x = 476.15 × 187.69 - Step 4: Simplify right side
345.06x = 89,367.27 - Step 5: Solve for x
x = 89,367.27/345.06 - Step 6: Final answer
x = 258.99
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.