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Finding the Fourth Proportional to 471.79, 650.56 and 397.09

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Solution

The fourth proportional to 471.79, 650.56 and 397.09 is: 547.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.79 : 650.56 = 397.09 : x
  2. Step 2: Convert to fraction form
    471.79/650.56 = 397.09/x
  3. Step 3: Cross multiply
    471.79x = 650.56 × 397.09
  4. Step 4: Simplify right side
    471.79x = 258,330.87
  5. Step 5: Solve for x
    x = 258,330.87/471.79
  6. Step 6: Final answer
    x = 547.55

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Why These Related Problems?

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