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Finding the Fourth Proportional to 259.11, 389.22 and 162.99

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Solution

The fourth proportional to 259.11, 389.22 and 162.99 is: 244.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.11 : 389.22 = 162.99 : x
  2. Step 2: Convert to fraction form
    259.11/389.22 = 162.99/x
  3. Step 3: Cross multiply
    259.11x = 389.22 × 162.99
  4. Step 4: Simplify right side
    259.11x = 63,438.97
  5. Step 5: Solve for x
    x = 63,438.97/259.11
  6. Step 6: Final answer
    x = 244.83

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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.