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Finding the Fourth Proportional to 1,295.80, 1,943.30 and 371.11

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Solution

The fourth proportional to 1,295.80, 1,943.30 and 371.11 is: 556.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295.80 : 1,943.30 = 371.11 : x
  2. Step 2: Convert to fraction form
    1,295.80/1,943.30 = 371.11/x
  3. Step 3: Cross multiply
    1,295.80x = 1,943.30 × 371.11
  4. Step 4: Simplify right side
    1,295.80x = 721,170.48
  5. Step 5: Solve for x
    x = 721,170.48/1,295.80
  6. Step 6: Final answer
    x = 556.55

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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.