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Finding the Fourth Proportional to 736.24, 1,102.68 and 447.28

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Solution

The fourth proportional to 736.24, 1,102.68 and 447.28 is: 669.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.24 : 1,102.68 = 447.28 : x
  2. Step 2: Convert to fraction form
    736.24/1,102.68 = 447.28/x
  3. Step 3: Cross multiply
    736.24x = 1,102.68 × 447.28
  4. Step 4: Simplify right side
    736.24x = 493,206.71
  5. Step 5: Solve for x
    x = 493,206.71/736.24
  6. Step 6: Final answer
    x = 669.90

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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.