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Finding the Fourth Proportional to 628.04, 941.99 and 423.92

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Solution

The fourth proportional to 628.04, 941.99 and 423.92 is: 635.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.04 : 941.99 = 423.92 : x
  2. Step 2: Convert to fraction form
    628.04/941.99 = 423.92/x
  3. Step 3: Cross multiply
    628.04x = 941.99 × 423.92
  4. Step 4: Simplify right side
    628.04x = 399,324.75
  5. Step 5: Solve for x
    x = 399,324.75/628.04
  6. Step 6: Final answer
    x = 635.83

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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.