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Finding the Fourth Proportional to 571.52, 856.77 and 206.06

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Solution

The fourth proportional to 571.52, 856.77 and 206.06 is: 308.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.52 : 856.77 = 206.06 : x
  2. Step 2: Convert to fraction form
    571.52/856.77 = 206.06/x
  3. Step 3: Cross multiply
    571.52x = 856.77 × 206.06
  4. Step 4: Simplify right side
    571.52x = 176,540.71
  5. Step 5: Solve for x
    x = 176,540.71/571.52
  6. Step 6: Final answer
    x = 308.90

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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.