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Finding the Fourth Proportional to 1,271.57, 1,908.44 and 502.61

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Solution

The fourth proportional to 1,271.57, 1,908.44 and 502.61 is: 754.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271.57 : 1,908.44 = 502.61 : x
  2. Step 2: Convert to fraction form
    1,271.57/1,908.44 = 502.61/x
  3. Step 3: Cross multiply
    1,271.57x = 1,908.44 × 502.61
  4. Step 4: Simplify right side
    1,271.57x = 959,198.52
  5. Step 5: Solve for x
    x = 959,198.52/1,271.57
  6. Step 6: Final answer
    x = 754.34

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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.