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Finding the Fourth Proportional to 860.07, 1,185.92 and 636.33

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Solution

The fourth proportional to 860.07, 1,185.92 and 636.33 is: 877.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    860.07 : 1,185.92 = 636.33 : x
  2. Step 2: Convert to fraction form
    860.07/1,185.92 = 636.33/x
  3. Step 3: Cross multiply
    860.07x = 1,185.92 × 636.33
  4. Step 4: Simplify right side
    860.07x = 754,633.29
  5. Step 5: Solve for x
    x = 754,633.29/860.07
  6. Step 6: Final answer
    x = 877.41

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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.