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Finding the Fourth Proportional to 1,324.36, 1,984.58 and 738.55

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Solution

The fourth proportional to 1,324.36, 1,984.58 and 738.55 is: 1,106.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.36 : 1,984.58 = 738.55 : x
  2. Step 2: Convert to fraction form
    1,324.36/1,984.58 = 738.55/x
  3. Step 3: Cross multiply
    1,324.36x = 1,984.58 × 738.55
  4. Step 4: Simplify right side
    1,324.36x = 1,465,711.56
  5. Step 5: Solve for x
    x = 1,465,711.56/1,324.36
  6. Step 6: Final answer
    x = 1,106.73

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1.5x scale

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.