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Finding the Fourth Proportional to 471.73, 651.02 and 355.09

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Solution

The fourth proportional to 471.73, 651.02 and 355.09 is: 490.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.73 : 651.02 = 355.09 : x
  2. Step 2: Convert to fraction form
    471.73/651.02 = 355.09/x
  3. Step 3: Cross multiply
    471.73x = 651.02 × 355.09
  4. Step 4: Simplify right side
    471.73x = 231,170.69
  5. Step 5: Solve for x
    x = 231,170.69/471.73
  6. Step 6: Final answer
    x = 490.05

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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.