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Finding the Fourth Proportional to 950.50, 1,311.78 and 751.60

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Solution

The fourth proportional to 950.50, 1,311.78 and 751.60 is: 1,037.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.50 : 1,311.78 = 751.60 : x
  2. Step 2: Convert to fraction form
    950.50/1,311.78 = 751.60/x
  3. Step 3: Cross multiply
    950.50x = 1,311.78 × 751.60
  4. Step 4: Simplify right side
    950.50x = 985,933.85
  5. Step 5: Solve for x
    x = 985,933.85/950.50
  6. Step 6: Final answer
    x = 1,037.28

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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.