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Finding the Fourth Proportional to 1,559.45, 2,337.96 and 865.54

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Solution

The fourth proportional to 1,559.45, 2,337.96 and 865.54 is: 1,297.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.45 : 2,337.96 = 865.54 : x
  2. Step 2: Convert to fraction form
    1,559.45/2,337.96 = 865.54/x
  3. Step 3: Cross multiply
    1,559.45x = 2,337.96 × 865.54
  4. Step 4: Simplify right side
    1,559.45x = 2,023,590.92
  5. Step 5: Solve for x
    x = 2,023,590.92/1,559.45
  6. Step 6: Final answer
    x = 1,297.63

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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.