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Finding the Fourth Proportional to 1,255.01, 1,730.79 and 1,006.28

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Solution

The fourth proportional to 1,255.01, 1,730.79 and 1,006.28 is: 1,387.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255.01 : 1,730.79 = 1,006.28 : x
  2. Step 2: Convert to fraction form
    1,255.01/1,730.79 = 1,006.28/x
  3. Step 3: Cross multiply
    1,255.01x = 1,730.79 × 1,006.28
  4. Step 4: Simplify right side
    1,255.01x = 1,741,650.71
  5. Step 5: Solve for x
    x = 1,741,650.71/1,255.01
  6. Step 6: Final answer
    x = 1,387.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.