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Finding the Fourth Proportional to 619, 928.53 and 234.28

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Solution

The fourth proportional to 619, 928.53 and 234.28 is: 351.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    619 : 928.53 = 234.28 : x
  2. Step 2: Convert to fraction form
    619/928.53 = 234.28/x
  3. Step 3: Cross multiply
    619x = 928.53 × 234.28
  4. Step 4: Simplify right side
    619x = 217,536.01
  5. Step 5: Solve for x
    x = 217,536.01/619
  6. Step 6: Final answer
    x = 351.43

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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.