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Finding the Fourth Proportional to 471.45, 707.42 and 197.56

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Solution

The fourth proportional to 471.45, 707.42 and 197.56 is: 296.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.45 : 707.42 = 197.56 : x
  2. Step 2: Convert to fraction form
    471.45/707.42 = 197.56/x
  3. Step 3: Cross multiply
    471.45x = 707.42 × 197.56
  4. Step 4: Simplify right side
    471.45x = 139,757.90
  5. Step 5: Solve for x
    x = 139,757.90/471.45
  6. Step 6: Final answer
    x = 296.44

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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.