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Finding the Fourth Proportional to 1,026.51, 1,414.08 and 860.73

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Solution

The fourth proportional to 1,026.51, 1,414.08 and 860.73 is: 1,185.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026.51 : 1,414.08 = 860.73 : x
  2. Step 2: Convert to fraction form
    1,026.51/1,414.08 = 860.73/x
  3. Step 3: Cross multiply
    1,026.51x = 1,414.08 × 860.73
  4. Step 4: Simplify right side
    1,026.51x = 1,217,141.08
  5. Step 5: Solve for x
    x = 1,217,141.08/1,026.51
  6. Step 6: Final answer
    x = 1,185.71

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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.