Home / 1,208.18-1,812.33-549.79

Finding the Fourth Proportional to 1,208.18, 1,812.33 and 549.79

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Solution

The fourth proportional to 1,208.18, 1,812.33 and 549.79 is: 824.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208.18 : 1,812.33 = 549.79 : x
  2. Step 2: Convert to fraction form
    1,208.18/1,812.33 = 549.79/x
  3. Step 3: Cross multiply
    1,208.18x = 1,812.33 × 549.79
  4. Step 4: Simplify right side
    1,208.18x = 996,396.38
  5. Step 5: Solve for x
    x = 996,396.38/1,208.18
  6. Step 6: Final answer
    x = 824.71

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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.