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Finding the Fourth Proportional to 631.44, 941.96 and 529.40

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Solution

The fourth proportional to 631.44, 941.96 and 529.40 is: 789.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.44 : 941.96 = 529.40 : x
  2. Step 2: Convert to fraction form
    631.44/941.96 = 529.40/x
  3. Step 3: Cross multiply
    631.44x = 941.96 × 529.40
  4. Step 4: Simplify right side
    631.44x = 498,673.62
  5. Step 5: Solve for x
    x = 498,673.62/631.44
  6. Step 6: Final answer
    x = 789.74

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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.