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Finding the Fourth Proportional to 1,026.52, 1,540.20 and 506.80

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Solution

The fourth proportional to 1,026.52, 1,540.20 and 506.80 is: 760.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026.52 : 1,540.20 = 506.80 : x
  2. Step 2: Convert to fraction form
    1,026.52/1,540.20 = 506.80/x
  3. Step 3: Cross multiply
    1,026.52x = 1,540.20 × 506.80
  4. Step 4: Simplify right side
    1,026.52x = 780,573.36
  5. Step 5: Solve for x
    x = 780,573.36/1,026.52
  6. Step 6: Final answer
    x = 760.41

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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.