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Finding the Fourth Proportional to 1,238.25, 1,857.48 and 372.56

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Solution

The fourth proportional to 1,238.25, 1,857.48 and 372.56 is: 558.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238.25 : 1,857.48 = 372.56 : x
  2. Step 2: Convert to fraction form
    1,238.25/1,857.48 = 372.56/x
  3. Step 3: Cross multiply
    1,238.25x = 1,857.48 × 372.56
  4. Step 4: Simplify right side
    1,238.25x = 692,022.75
  5. Step 5: Solve for x
    x = 692,022.75/1,238.25
  6. Step 6: Final answer
    x = 558.87

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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.