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Finding the Fourth Proportional to 475.89, 713.20 and 270.38

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Solution

The fourth proportional to 475.89, 713.20 and 270.38 is: 405.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.89 : 713.20 = 270.38 : x
  2. Step 2: Convert to fraction form
    475.89/713.20 = 270.38/x
  3. Step 3: Cross multiply
    475.89x = 713.20 × 270.38
  4. Step 4: Simplify right side
    475.89x = 192,835.02
  5. Step 5: Solve for x
    x = 192,835.02/475.89
  6. Step 6: Final answer
    x = 405.21

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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.