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Finding the Fourth Proportional to 1,044.54, 1,559.48 and 862.29

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Solution

The fourth proportional to 1,044.54, 1,559.48 and 862.29 is: 1,287.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,044.54 : 1,559.48 = 862.29 : x
  2. Step 2: Convert to fraction form
    1,044.54/1,559.48 = 862.29/x
  3. Step 3: Cross multiply
    1,044.54x = 1,559.48 × 862.29
  4. Step 4: Simplify right side
    1,044.54x = 1,344,719.70
  5. Step 5: Solve for x
    x = 1,344,719.70/1,044.54
  6. Step 6: Final answer
    x = 1,287.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.