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Finding the Fourth Proportional to 860.00, 1,186.77 and 523.79

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Solution

The fourth proportional to 860.00, 1,186.77 and 523.79 is: 722.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    860.00 : 1,186.77 = 523.79 : x
  2. Step 2: Convert to fraction form
    860.00/1,186.77 = 523.79/x
  3. Step 3: Cross multiply
    860.00x = 1,186.77 × 523.79
  4. Step 4: Simplify right side
    860.00x = 621,612.32
  5. Step 5: Solve for x
    x = 621,612.32/860.00
  6. Step 6: Final answer
    x = 722.81

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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.