Home / 1,044.25-1,566.38-428.02

Finding the Fourth Proportional to 1,044.25, 1,566.38 and 428.02

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Solution

The fourth proportional to 1,044.25, 1,566.38 and 428.02 is: 642.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,044.25 : 1,566.38 = 428.02 : x
  2. Step 2: Convert to fraction form
    1,044.25/1,566.38 = 428.02/x
  3. Step 3: Cross multiply
    1,044.25x = 1,566.38 × 428.02
  4. Step 4: Simplify right side
    1,044.25x = 670,441.97
  5. Step 5: Solve for x
    x = 670,441.97/1,044.25
  6. Step 6: Final answer
    x = 642.03

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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.