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Finding the Fourth Proportional to 736.56, 1,104.12 and 690.48

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Solution

The fourth proportional to 736.56, 1,104.12 and 690.48 is: 1,035.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.56 : 1,104.12 = 690.48 : x
  2. Step 2: Convert to fraction form
    736.56/1,104.12 = 690.48/x
  3. Step 3: Cross multiply
    736.56x = 1,104.12 × 690.48
  4. Step 4: Simplify right side
    736.56x = 762,372.78
  5. Step 5: Solve for x
    x = 762,372.78/736.56
  6. Step 6: Final answer
    x = 1,035.05

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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.