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Finding the Fourth Proportional to 620.79, 856.62 and 527.37

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Solution

The fourth proportional to 620.79, 856.62 and 527.37 is: 727.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.79 : 856.62 = 527.37 : x
  2. Step 2: Convert to fraction form
    620.79/856.62 = 527.37/x
  3. Step 3: Cross multiply
    620.79x = 856.62 × 527.37
  4. Step 4: Simplify right side
    620.79x = 451,755.69
  5. Step 5: Solve for x
    x = 451,755.69/620.79
  6. Step 6: Final answer
    x = 727.71

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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.