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Finding the Fourth Proportional to 571.99, 856.79 and 474.26

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Solution

The fourth proportional to 571.99, 856.79 and 474.26 is: 710.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.99 : 856.79 = 474.26 : x
  2. Step 2: Convert to fraction form
    571.99/856.79 = 474.26/x
  3. Step 3: Cross multiply
    571.99x = 856.79 × 474.26
  4. Step 4: Simplify right side
    571.99x = 406,334.57
  5. Step 5: Solve for x
    x = 406,334.57/571.99
  6. Step 6: Final answer
    x = 710.39

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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.