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Finding the Fourth Proportional to 1,193.45, 1,790.30 and 371.93

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Solution

The fourth proportional to 1,193.45, 1,790.30 and 371.93 is: 557.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,193.45 : 1,790.30 = 371.93 : x
  2. Step 2: Convert to fraction form
    1,193.45/1,790.30 = 371.93/x
  3. Step 3: Cross multiply
    1,193.45x = 1,790.30 × 371.93
  4. Step 4: Simplify right side
    1,193.45x = 665,858.26
  5. Step 5: Solve for x
    x = 665,858.26/1,193.45
  6. Step 6: Final answer
    x = 557.93

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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.