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Finding the Fourth Proportional to 736.33, 1,101.25 and 427.38

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Solution

The fourth proportional to 736.33, 1,101.25 and 427.38 is: 639.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.33 : 1,101.25 = 427.38 : x
  2. Step 2: Convert to fraction form
    736.33/1,101.25 = 427.38/x
  3. Step 3: Cross multiply
    736.33x = 1,101.25 × 427.38
  4. Step 4: Simplify right side
    736.33x = 470,650.09
  5. Step 5: Solve for x
    x = 470,650.09/736.33
  6. Step 6: Final answer
    x = 639.19

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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.