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Finding the Fourth Proportional to 608.60, 911.44 and 347.81

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Solution

The fourth proportional to 608.60, 911.44 and 347.81 is: 520.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.60 : 911.44 = 347.81 : x
  2. Step 2: Convert to fraction form
    608.60/911.44 = 347.81/x
  3. Step 3: Cross multiply
    608.60x = 911.44 × 347.81
  4. Step 4: Simplify right side
    608.60x = 317,006.21
  5. Step 5: Solve for x
    x = 317,006.21/608.60
  6. Step 6: Final answer
    x = 520.88

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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.