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Finding the Fourth Proportional to 571.07, 856.22 and 310.85

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Solution

The fourth proportional to 571.07, 856.22 and 310.85 is: 466.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.07 : 856.22 = 310.85 : x
  2. Step 2: Convert to fraction form
    571.07/856.22 = 310.85/x
  3. Step 3: Cross multiply
    571.07x = 856.22 × 310.85
  4. Step 4: Simplify right side
    571.07x = 266,155.99
  5. Step 5: Solve for x
    x = 266,155.99/571.07
  6. Step 6: Final answer
    x = 466.07

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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.