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Finding the Fourth Proportional to 1,164.96, 1,747.21 and 343.05

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Solution

The fourth proportional to 1,164.96, 1,747.21 and 343.05 is: 514.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,164.96 : 1,747.21 = 343.05 : x
  2. Step 2: Convert to fraction form
    1,164.96/1,747.21 = 343.05/x
  3. Step 3: Cross multiply
    1,164.96x = 1,747.21 × 343.05
  4. Step 4: Simplify right side
    1,164.96x = 599,375.60
  5. Step 5: Solve for x
    x = 599,375.60/1,164.96
  6. Step 6: Final answer
    x = 514.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.