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Finding the Fourth Proportional to 609.33, 840.73 and 343.72

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Solution

The fourth proportional to 609.33, 840.73 and 343.72 is: 474.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.33 : 840.73 = 343.72 : x
  2. Step 2: Convert to fraction form
    609.33/840.73 = 343.72/x
  3. Step 3: Cross multiply
    609.33x = 840.73 × 343.72
  4. Step 4: Simplify right side
    609.33x = 288,974.00
  5. Step 5: Solve for x
    x = 288,974.00/609.33
  6. Step 6: Final answer
    x = 474.25

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.