Home / 1,243.10-1,863.40-462.60

Finding the Fourth Proportional to 1,243.10, 1,863.40 and 462.60

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Solution

The fourth proportional to 1,243.10, 1,863.40 and 462.60 is: 693.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243.10 : 1,863.40 = 462.60 : x
  2. Step 2: Convert to fraction form
    1,243.10/1,863.40 = 462.60/x
  3. Step 3: Cross multiply
    1,243.10x = 1,863.40 × 462.60
  4. Step 4: Simplify right side
    1,243.10x = 862,008.84
  5. Step 5: Solve for x
    x = 862,008.84/1,243.10
  6. Step 6: Final answer
    x = 693.43

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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.