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Finding the Fourth Proportional to 571.08, 856.44 and 480.36

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Solution

The fourth proportional to 571.08, 856.44 and 480.36 is: 720.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.08 : 856.44 = 480.36 : x
  2. Step 2: Convert to fraction form
    571.08/856.44 = 480.36/x
  3. Step 3: Cross multiply
    571.08x = 856.44 × 480.36
  4. Step 4: Simplify right side
    571.08x = 411,399.52
  5. Step 5: Solve for x
    x = 411,399.52/571.08
  6. Step 6: Final answer
    x = 720.39

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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.