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Finding the Fourth Proportional to 949.07, 1,308.85 and 650.75

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Solution

The fourth proportional to 949.07, 1,308.85 and 650.75 is: 897.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.07 : 1,308.85 = 650.75 : x
  2. Step 2: Convert to fraction form
    949.07/1,308.85 = 650.75/x
  3. Step 3: Cross multiply
    949.07x = 1,308.85 × 650.75
  4. Step 4: Simplify right side
    949.07x = 851,734.14
  5. Step 5: Solve for x
    x = 851,734.14/949.07
  6. Step 6: Final answer
    x = 897.44

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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.