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Finding the Fourth Proportional to 949.44, 1,310.57 and 617.75

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Solution

The fourth proportional to 949.44, 1,310.57 and 617.75 is: 852.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.44 : 1,310.57 = 617.75 : x
  2. Step 2: Convert to fraction form
    949.44/1,310.57 = 617.75/x
  3. Step 3: Cross multiply
    949.44x = 1,310.57 × 617.75
  4. Step 4: Simplify right side
    949.44x = 809,604.62
  5. Step 5: Solve for x
    x = 809,604.62/949.44
  6. Step 6: Final answer
    x = 852.72

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Double scale
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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.