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Finding the Fourth Proportional to 628.25, 942.98 and 480.62

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Solution

The fourth proportional to 628.25, 942.98 and 480.62 is: 721.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.25 : 942.98 = 480.62 : x
  2. Step 2: Convert to fraction form
    628.25/942.98 = 480.62/x
  3. Step 3: Cross multiply
    628.25x = 942.98 × 480.62
  4. Step 4: Simplify right side
    628.25x = 453,207.93
  5. Step 5: Solve for x
    x = 453,207.93/628.25
  6. Step 6: Final answer
    x = 721.39

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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.