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Finding the Fourth Proportional to 1,151.43, 1,727.30 and 371.24

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Solution

The fourth proportional to 1,151.43, 1,727.30 and 371.24 is: 556.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,151.43 : 1,727.30 = 371.24 : x
  2. Step 2: Convert to fraction form
    1,151.43/1,727.30 = 371.24/x
  3. Step 3: Cross multiply
    1,151.43x = 1,727.30 × 371.24
  4. Step 4: Simplify right side
    1,151.43x = 641,232.36
  5. Step 5: Solve for x
    x = 641,232.36/1,151.43
  6. Step 6: Final answer
    x = 556.90

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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.