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Finding the Fourth Proportional to 1,255.55, 1,883.70 and 475.79

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Solution

The fourth proportional to 1,255.55, 1,883.70 and 475.79 is: 713.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255.55 : 1,883.70 = 475.79 : x
  2. Step 2: Convert to fraction form
    1,255.55/1,883.70 = 475.79/x
  3. Step 3: Cross multiply
    1,255.55x = 1,883.70 × 475.79
  4. Step 4: Simplify right side
    1,255.55x = 896,245.62
  5. Step 5: Solve for x
    x = 896,245.62/1,255.55
  6. Step 6: Final answer
    x = 713.83

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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.