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Finding the Fourth Proportional to 1,559.35, 2,339.79 and 736.64

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Solution

The fourth proportional to 1,559.35, 2,339.79 and 736.64 is: 1,105.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.35 : 2,339.79 = 736.64 : x
  2. Step 2: Convert to fraction form
    1,559.35/2,339.79 = 736.64/x
  3. Step 3: Cross multiply
    1,559.35x = 2,339.79 × 736.64
  4. Step 4: Simplify right side
    1,559.35x = 1,723,590.38
  5. Step 5: Solve for x
    x = 1,723,590.38/1,559.35
  6. Step 6: Final answer
    x = 1,105.33

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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.