Home / 1,222.69-1,834.06-345.18

Finding the Fourth Proportional to 1,222.69, 1,834.06 and 345.18

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Solution

The fourth proportional to 1,222.69, 1,834.06 and 345.18 is: 517.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222.69 : 1,834.06 = 345.18 : x
  2. Step 2: Convert to fraction form
    1,222.69/1,834.06 = 345.18/x
  3. Step 3: Cross multiply
    1,222.69x = 1,834.06 × 345.18
  4. Step 4: Simplify right side
    1,222.69x = 633,086.85
  5. Step 5: Solve for x
    x = 633,086.85/1,222.69
  6. Step 6: Final answer
    x = 517.78

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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.