Home / 1,248.25-1,872.37-323.81

Finding the Fourth Proportional to 1,248.25, 1,872.37 and 323.81

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Solution

The fourth proportional to 1,248.25, 1,872.37 and 323.81 is: 485.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248.25 : 1,872.37 = 323.81 : x
  2. Step 2: Convert to fraction form
    1,248.25/1,872.37 = 323.81/x
  3. Step 3: Cross multiply
    1,248.25x = 1,872.37 × 323.81
  4. Step 4: Simplify right side
    1,248.25x = 606,281.15
  5. Step 5: Solve for x
    x = 606,281.15/1,248.25
  6. Step 6: Final answer
    x = 485.70

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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.