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Finding the Fourth Proportional to 571.45, 856.88 and 263.03

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Solution

The fourth proportional to 571.45, 856.88 and 263.03 is: 394.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.45 : 856.88 = 263.03 : x
  2. Step 2: Convert to fraction form
    571.45/856.88 = 263.03/x
  3. Step 3: Cross multiply
    571.45x = 856.88 × 263.03
  4. Step 4: Simplify right side
    571.45x = 225,383.83
  5. Step 5: Solve for x
    x = 225,383.83/571.45
  6. Step 6: Final answer
    x = 394.41

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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.