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Finding the Fourth Proportional to 629.54, 942.56 and 320.73

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Solution

The fourth proportional to 629.54, 942.56 and 320.73 is: 480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.54 : 942.56 = 320.73 : x
  2. Step 2: Convert to fraction form
    629.54/942.56 = 320.73/x
  3. Step 3: Cross multiply
    629.54x = 942.56 × 320.73
  4. Step 4: Simplify right side
    629.54x = 302,303.33
  5. Step 5: Solve for x
    x = 302,303.33/629.54
  6. Step 6: Final answer
    x = 480.20

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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.