Home / 1,323.33-1,985.63-543.56

Finding the Fourth Proportional to 1,323.33, 1,985.63 and 543.56

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Solution

The fourth proportional to 1,323.33, 1,985.63 and 543.56 is: 815.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.33 : 1,985.63 = 543.56 : x
  2. Step 2: Convert to fraction form
    1,323.33/1,985.63 = 543.56/x
  3. Step 3: Cross multiply
    1,323.33x = 1,985.63 × 543.56
  4. Step 4: Simplify right side
    1,323.33x = 1,079,315.71
  5. Step 5: Solve for x
    x = 1,079,315.71/1,323.33
  6. Step 6: Final answer
    x = 815.61

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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.