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Finding the Fourth Proportional to 694.47, 1,041.37 and 475.43

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Solution

The fourth proportional to 694.47, 1,041.37 and 475.43 is: 712.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.47 : 1,041.37 = 475.43 : x
  2. Step 2: Convert to fraction form
    694.47/1,041.37 = 475.43/x
  3. Step 3: Cross multiply
    694.47x = 1,041.37 × 475.43
  4. Step 4: Simplify right side
    694.47x = 495,096.16
  5. Step 5: Solve for x
    x = 495,096.16/694.47
  6. Step 6: Final answer
    x = 712.91

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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.