Home / 1,044.67-1,566.30-428.20

Finding the Fourth Proportional to 1,044.67, 1,566.30 and 428.20

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Solution

The fourth proportional to 1,044.67, 1,566.30 and 428.20 is: 642.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,044.67 : 1,566.30 = 428.20 : x
  2. Step 2: Convert to fraction form
    1,044.67/1,566.30 = 428.20/x
  3. Step 3: Cross multiply
    1,044.67x = 1,566.30 × 428.20
  4. Step 4: Simplify right side
    1,044.67x = 670,689.66
  5. Step 5: Solve for x
    x = 670,689.66/1,044.67
  6. Step 6: Final answer
    x = 642.01

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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.