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Finding the Fourth Proportional to 475.63, 713.08 and 255.67

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Solution

The fourth proportional to 475.63, 713.08 and 255.67 is: 383.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.63 : 713.08 = 255.67 : x
  2. Step 2: Convert to fraction form
    475.63/713.08 = 255.67/x
  3. Step 3: Cross multiply
    475.63x = 713.08 × 255.67
  4. Step 4: Simplify right side
    475.63x = 182,311.70
  5. Step 5: Solve for x
    x = 182,311.70/475.63
  6. Step 6: Final answer
    x = 383.31

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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.