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Finding the Fourth Proportional to 1,167.63, 1,751.61 and 427.27

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Solution

The fourth proportional to 1,167.63, 1,751.61 and 427.27 is: 640.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,167.63 : 1,751.61 = 427.27 : x
  2. Step 2: Convert to fraction form
    1,167.63/1,751.61 = 427.27/x
  3. Step 3: Cross multiply
    1,167.63x = 1,751.61 × 427.27
  4. Step 4: Simplify right side
    1,167.63x = 748,408.27
  5. Step 5: Solve for x
    x = 748,408.27/1,167.63
  6. Step 6: Final answer
    x = 640.97

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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.