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Finding the Fourth Proportional to 471.92, 707.56 and 240.96

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Solution

The fourth proportional to 471.92, 707.56 and 240.96 is: 361.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.92 : 707.56 = 240.96 : x
  2. Step 2: Convert to fraction form
    471.92/707.56 = 240.96/x
  3. Step 3: Cross multiply
    471.92x = 707.56 × 240.96
  4. Step 4: Simplify right side
    471.92x = 170,493.66
  5. Step 5: Solve for x
    x = 170,493.66/471.92
  6. Step 6: Final answer
    x = 361.28

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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.