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Finding the Fourth Proportional to 950.55, 1,311.37 and 577.56

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Solution

The fourth proportional to 950.55, 1,311.37 and 577.56 is: 796.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.55 : 1,311.37 = 577.56 : x
  2. Step 2: Convert to fraction form
    950.55/1,311.37 = 577.56/x
  3. Step 3: Cross multiply
    950.55x = 1,311.37 × 577.56
  4. Step 4: Simplify right side
    950.55x = 757,394.86
  5. Step 5: Solve for x
    x = 757,394.86/950.55
  6. Step 6: Final answer
    x = 796.80

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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.