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Finding the Fourth Proportional to 628.06, 940.52 and 353.86

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Solution

The fourth proportional to 628.06, 940.52 and 353.86 is: 529.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.06 : 940.52 = 353.86 : x
  2. Step 2: Convert to fraction form
    628.06/940.52 = 353.86/x
  3. Step 3: Cross multiply
    628.06x = 940.52 × 353.86
  4. Step 4: Simplify right side
    628.06x = 332,812.41
  5. Step 5: Solve for x
    x = 332,812.41/628.06
  6. Step 6: Final answer
    x = 529.91

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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.