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Finding the Fourth Proportional to 1,027.41, 1,539.27 and 680.24

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Solution

The fourth proportional to 1,027.41, 1,539.27 and 680.24 is: 1,019.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,027.41 : 1,539.27 = 680.24 : x
  2. Step 2: Convert to fraction form
    1,027.41/1,539.27 = 680.24/x
  3. Step 3: Cross multiply
    1,027.41x = 1,539.27 × 680.24
  4. Step 4: Simplify right side
    1,027.41x = 1,047,065.33
  5. Step 5: Solve for x
    x = 1,047,065.33/1,027.41
  6. Step 6: Final answer
    x = 1,019.13

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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.