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Finding the Fourth Proportional to 481.79, 722.06 and 193.43

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Solution

The fourth proportional to 481.79, 722.06 and 193.43 is: 289.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.79 : 722.06 = 193.43 : x
  2. Step 2: Convert to fraction form
    481.79/722.06 = 193.43/x
  3. Step 3: Cross multiply
    481.79x = 722.06 × 193.43
  4. Step 4: Simplify right side
    481.79x = 139,669.63
  5. Step 5: Solve for x
    x = 139,669.63/481.79
  6. Step 6: Final answer
    x = 289.90

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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.