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Finding the Fourth Proportional to 1,559.91, 2,339.43 and 866.97

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Solution

The fourth proportional to 1,559.91, 2,339.43 and 866.97 is: 1,300.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.91 : 2,339.43 = 866.97 : x
  2. Step 2: Convert to fraction form
    1,559.91/2,339.43 = 866.97/x
  3. Step 3: Cross multiply
    1,559.91x = 2,339.43 × 866.97
  4. Step 4: Simplify right side
    1,559.91x = 2,028,215.63
  5. Step 5: Solve for x
    x = 2,028,215.63/1,559.91
  6. Step 6: Final answer
    x = 1,300.21

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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.