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Finding the Fourth Proportional to 736.45, 1,016.28 and 404.85

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Solution

The fourth proportional to 736.45, 1,016.28 and 404.85 is: 558.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.45 : 1,016.28 = 404.85 : x
  2. Step 2: Convert to fraction form
    736.45/1,016.28 = 404.85/x
  3. Step 3: Cross multiply
    736.45x = 1,016.28 × 404.85
  4. Step 4: Simplify right side
    736.45x = 411,440.96
  5. Step 5: Solve for x
    x = 411,440.96/736.45
  6. Step 6: Final answer
    x = 558.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.