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Finding the Fourth Proportional to 1,942.58, 2,913.81 and 481.71

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Solution

The fourth proportional to 1,942.58, 2,913.81 and 481.71 is: 722.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.58 : 2,913.81 = 481.71 : x
  2. Step 2: Convert to fraction form
    1,942.58/2,913.81 = 481.71/x
  3. Step 3: Cross multiply
    1,942.58x = 2,913.81 × 481.71
  4. Step 4: Simplify right side
    1,942.58x = 1,403,611.42
  5. Step 5: Solve for x
    x = 1,403,611.42/1,942.58
  6. Step 6: Final answer
    x = 722.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.