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Finding the Fourth Proportional to 1,044.09, 1,566.09 and 427.59

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Solution

The fourth proportional to 1,044.09, 1,566.09 and 427.59 is: 641.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,044.09 : 1,566.09 = 427.59 : x
  2. Step 2: Convert to fraction form
    1,044.09/1,566.09 = 427.59/x
  3. Step 3: Cross multiply
    1,044.09x = 1,566.09 × 427.59
  4. Step 4: Simplify right side
    1,044.09x = 669,644.42
  5. Step 5: Solve for x
    x = 669,644.42/1,044.09
  6. Step 6: Final answer
    x = 641.37

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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.