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Finding the Fourth Proportional to 629.22, 942.40 and 336.20

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Solution

The fourth proportional to 629.22, 942.40 and 336.20 is: 503.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.22 : 942.40 = 336.20 : x
  2. Step 2: Convert to fraction form
    629.22/942.40 = 336.20/x
  3. Step 3: Cross multiply
    629.22x = 942.40 × 336.20
  4. Step 4: Simplify right side
    629.22x = 316,834.88
  5. Step 5: Solve for x
    x = 316,834.88/629.22
  6. Step 6: Final answer
    x = 503.54

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.