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Finding the Fourth Proportional to 748.10, 1,122.06 and 200.32

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Solution

The fourth proportional to 748.10, 1,122.06 and 200.32 is: 300.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    748.10 : 1,122.06 = 200.32 : x
  2. Step 2: Convert to fraction form
    748.10/1,122.06 = 200.32/x
  3. Step 3: Cross multiply
    748.10x = 1,122.06 × 200.32
  4. Step 4: Simplify right side
    748.10x = 224,771.06
  5. Step 5: Solve for x
    x = 224,771.06/748.10
  6. Step 6: Final answer
    x = 300.46

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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.