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Finding the Fourth Proportional to 1,347.44, 2,021.46 and 731.70

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Solution

The fourth proportional to 1,347.44, 2,021.46 and 731.70 is: 1,097.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.44 : 2,021.46 = 731.70 : x
  2. Step 2: Convert to fraction form
    1,347.44/2,021.46 = 731.70/x
  3. Step 3: Cross multiply
    1,347.44x = 2,021.46 × 731.70
  4. Step 4: Simplify right side
    1,347.44x = 1,479,102.28
  5. Step 5: Solve for x
    x = 1,479,102.28/1,347.44
  6. Step 6: Final answer
    x = 1,097.71

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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.