Home / 1,044.30-1,566.47-428.01

Finding the Fourth Proportional to 1,044.30, 1,566.47 and 428.01

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Solution

The fourth proportional to 1,044.30, 1,566.47 and 428.01 is: 642.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,044.30 : 1,566.47 = 428.01 : x
  2. Step 2: Convert to fraction form
    1,044.30/1,566.47 = 428.01/x
  3. Step 3: Cross multiply
    1,044.30x = 1,566.47 × 428.01
  4. Step 4: Simplify right side
    1,044.30x = 670,462.68
  5. Step 5: Solve for x
    x = 670,462.68/1,044.30
  6. Step 6: Final answer
    x = 642.02

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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.