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Finding the Fourth Proportional to 571.73, 856.65 and 354.86

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Solution

The fourth proportional to 571.73, 856.65 and 354.86 is: 531.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.73 : 856.65 = 354.86 : x
  2. Step 2: Convert to fraction form
    571.73/856.65 = 354.86/x
  3. Step 3: Cross multiply
    571.73x = 856.65 × 354.86
  4. Step 4: Simplify right side
    571.73x = 303,986.54
  5. Step 5: Solve for x
    x = 303,986.54/571.73
  6. Step 6: Final answer
    x = 531.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.