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Finding the Fourth Proportional to 859.56, 1,186.27 and 544.79

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Solution

The fourth proportional to 859.56, 1,186.27 and 544.79 is: 751.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    859.56 : 1,186.27 = 544.79 : x
  2. Step 2: Convert to fraction form
    859.56/1,186.27 = 544.79/x
  3. Step 3: Cross multiply
    859.56x = 1,186.27 × 544.79
  4. Step 4: Simplify right side
    859.56x = 646,268.03
  5. Step 5: Solve for x
    x = 646,268.03/859.56
  6. Step 6: Final answer
    x = 751.86

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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.