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Finding the Fourth Proportional to 949.39, 1,310.24 and 556.54

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Solution

The fourth proportional to 949.39, 1,310.24 and 556.54 is: 768.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.39 : 1,310.24 = 556.54 : x
  2. Step 2: Convert to fraction form
    949.39/1,310.24 = 556.54/x
  3. Step 3: Cross multiply
    949.39x = 1,310.24 × 556.54
  4. Step 4: Simplify right side
    949.39x = 729,199.09
  5. Step 5: Solve for x
    x = 729,199.09/949.39
  6. Step 6: Final answer
    x = 768.07

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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.