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Finding the Fourth Proportional to 860.36, 1,186.41 and 736.43

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Solution

The fourth proportional to 860.36, 1,186.41 and 736.43 is: 1,015.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    860.36 : 1,186.41 = 736.43 : x
  2. Step 2: Convert to fraction form
    860.36/1,186.41 = 736.43/x
  3. Step 3: Cross multiply
    860.36x = 1,186.41 × 736.43
  4. Step 4: Simplify right side
    860.36x = 873,707.92
  5. Step 5: Solve for x
    x = 873,707.92/860.36
  6. Step 6: Final answer
    x = 1,015.51

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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.