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Finding the Fourth Proportional to 571.26, 856.80 and 186.51

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Solution

The fourth proportional to 571.26, 856.80 and 186.51 is: 279.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.26 : 856.80 = 186.51 : x
  2. Step 2: Convert to fraction form
    571.26/856.80 = 186.51/x
  3. Step 3: Cross multiply
    571.26x = 856.80 × 186.51
  4. Step 4: Simplify right side
    571.26x = 159,804.98
  5. Step 5: Solve for x
    x = 159,804.98/571.26
  6. Step 6: Final answer
    x = 279.74

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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.