Home / 1,147.94-1,721.88-326.19

Finding the Fourth Proportional to 1,147.94, 1,721.88 and 326.19

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Solution

The fourth proportional to 1,147.94, 1,721.88 and 326.19 is: 489.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.94 : 1,721.88 = 326.19 : x
  2. Step 2: Convert to fraction form
    1,147.94/1,721.88 = 326.19/x
  3. Step 3: Cross multiply
    1,147.94x = 1,721.88 × 326.19
  4. Step 4: Simplify right side
    1,147.94x = 561,660.04
  5. Step 5: Solve for x
    x = 561,660.04/1,147.94
  6. Step 6: Final answer
    x = 489.28

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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.