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Finding the Fourth Proportional to 571.44, 856.32 and 354.36

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Solution

The fourth proportional to 571.44, 856.32 and 354.36 is: 531.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.44 : 856.32 = 354.36 : x
  2. Step 2: Convert to fraction form
    571.44/856.32 = 354.36/x
  3. Step 3: Cross multiply
    571.44x = 856.32 × 354.36
  4. Step 4: Simplify right side
    571.44x = 303,445.56
  5. Step 5: Solve for x
    x = 303,445.56/571.44
  6. Step 6: Final answer
    x = 531.02

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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.