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Finding the Fourth Proportional to 635.68, 949.40 and 631.54

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Solution

The fourth proportional to 635.68, 949.40 and 631.54 is: 943.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.68 : 949.40 = 631.54 : x
  2. Step 2: Convert to fraction form
    635.68/949.40 = 631.54/x
  3. Step 3: Cross multiply
    635.68x = 949.40 × 631.54
  4. Step 4: Simplify right side
    635.68x = 599,584.08
  5. Step 5: Solve for x
    x = 599,584.08/635.68
  6. Step 6: Final answer
    x = 943.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.