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Finding the Fourth Proportional to 950.38, 1,311.40 and 577.44

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Solution

The fourth proportional to 950.38, 1,311.40 and 577.44 is: 796.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.38 : 1,311.40 = 577.44 : x
  2. Step 2: Convert to fraction form
    950.38/1,311.40 = 577.44/x
  3. Step 3: Cross multiply
    950.38x = 1,311.40 × 577.44
  4. Step 4: Simplify right side
    950.38x = 757,254.82
  5. Step 5: Solve for x
    x = 757,254.82/950.38
  6. Step 6: Final answer
    x = 796.79

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1.5x scale

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.