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Finding the Fourth Proportional to 669.26, 1,004.27 and 361.10

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Solution

The fourth proportional to 669.26, 1,004.27 and 361.10 is: 541.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.26 : 1,004.27 = 361.10 : x
  2. Step 2: Convert to fraction form
    669.26/1,004.27 = 361.10/x
  3. Step 3: Cross multiply
    669.26x = 1,004.27 × 361.10
  4. Step 4: Simplify right side
    669.26x = 362,635.07
  5. Step 5: Solve for x
    x = 362,635.07/669.26
  6. Step 6: Final answer
    x = 541.85

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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.