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Finding the Fourth Proportional to 1,805.27, 2,707.90 and 437.27

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Solution

The fourth proportional to 1,805.27, 2,707.90 and 437.27 is: 655.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,805.27 : 2,707.90 = 437.27 : x
  2. Step 2: Convert to fraction form
    1,805.27/2,707.90 = 437.27/x
  3. Step 3: Cross multiply
    1,805.27x = 2,707.90 × 437.27
  4. Step 4: Simplify right side
    1,805.27x = 1,184,083.43
  5. Step 5: Solve for x
    x = 1,184,083.43/1,805.27
  6. Step 6: Final answer
    x = 655.90

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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.