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Finding the Fourth Proportional to 513.08, 768.95 and 188.14

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Solution

The fourth proportional to 513.08, 768.95 and 188.14 is: 281.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.08 : 768.95 = 188.14 : x
  2. Step 2: Convert to fraction form
    513.08/768.95 = 188.14/x
  3. Step 3: Cross multiply
    513.08x = 768.95 × 188.14
  4. Step 4: Simplify right side
    513.08x = 144,670.25
  5. Step 5: Solve for x
    x = 144,670.25/513.08
  6. Step 6: Final answer
    x = 281.96

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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.