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Finding the Fourth Proportional to 571.26, 856.62 and 493.08

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Solution

The fourth proportional to 571.26, 856.62 and 493.08 is: 739.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.26 : 856.62 = 493.08 : x
  2. Step 2: Convert to fraction form
    571.26/856.62 = 493.08/x
  3. Step 3: Cross multiply
    571.26x = 856.62 × 493.08
  4. Step 4: Simplify right side
    571.26x = 422,382.19
  5. Step 5: Solve for x
    x = 422,382.19/571.26
  6. Step 6: Final answer
    x = 739.39

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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.