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Finding the Fourth Proportional to 475.07, 655.49 and 327.75

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Solution

The fourth proportional to 475.07, 655.49 and 327.75 is: 452.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.07 : 655.49 = 327.75 : x
  2. Step 2: Convert to fraction form
    475.07/655.49 = 327.75/x
  3. Step 3: Cross multiply
    475.07x = 655.49 × 327.75
  4. Step 4: Simplify right side
    475.07x = 214,835.21
  5. Step 5: Solve for x
    x = 214,835.21/475.07
  6. Step 6: Final answer
    x = 452.22

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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.