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Finding the Fourth Proportional to 950.03, 1,311.09 and 716.75

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Solution

The fourth proportional to 950.03, 1,311.09 and 716.75 is: 989.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.03 : 1,311.09 = 716.75 : x
  2. Step 2: Convert to fraction form
    950.03/1,311.09 = 716.75/x
  3. Step 3: Cross multiply
    950.03x = 1,311.09 × 716.75
  4. Step 4: Simplify right side
    950.03x = 939,723.76
  5. Step 5: Solve for x
    x = 939,723.76/950.03
  6. Step 6: Final answer
    x = 989.15

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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.