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Finding the Fourth Proportional to 513.22, 769.23 and 188.34

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Solution

The fourth proportional to 513.22, 769.23 and 188.34 is: 282.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.22 : 769.23 = 188.34 : x
  2. Step 2: Convert to fraction form
    513.22/769.23 = 188.34/x
  3. Step 3: Cross multiply
    513.22x = 769.23 × 188.34
  4. Step 4: Simplify right side
    513.22x = 144,876.78
  5. Step 5: Solve for x
    x = 144,876.78/513.22
  6. Step 6: Final answer
    x = 282.29

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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.