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Finding the Fourth Proportional to 860.27, 1,185.93 and 710.37

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Solution

The fourth proportional to 860.27, 1,185.93 and 710.37 is: 979.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    860.27 : 1,185.93 = 710.37 : x
  2. Step 2: Convert to fraction form
    860.27/1,185.93 = 710.37/x
  3. Step 3: Cross multiply
    860.27x = 1,185.93 × 710.37
  4. Step 4: Simplify right side
    860.27x = 842,449.09
  5. Step 5: Solve for x
    x = 842,449.09/860.27
  6. Step 6: Final answer
    x = 979.29

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1.5x scale

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.