Home / 1,243.09-1,865.17-549.93

Finding the Fourth Proportional to 1,243.09, 1,865.17 and 549.93

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Solution

The fourth proportional to 1,243.09, 1,865.17 and 549.93 is: 825.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243.09 : 1,865.17 = 549.93 : x
  2. Step 2: Convert to fraction form
    1,243.09/1,865.17 = 549.93/x
  3. Step 3: Cross multiply
    1,243.09x = 1,865.17 × 549.93
  4. Step 4: Simplify right side
    1,243.09x = 1,025,712.94
  5. Step 5: Solve for x
    x = 1,025,712.94/1,243.09
  6. Step 6: Final answer
    x = 825.13

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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.