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Finding the Fourth Proportional to 694.12, 1,040.08 and 369.04

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Solution

The fourth proportional to 694.12, 1,040.08 and 369.04 is: 552.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.12 : 1,040.08 = 369.04 : x
  2. Step 2: Convert to fraction form
    694.12/1,040.08 = 369.04/x
  3. Step 3: Cross multiply
    694.12x = 1,040.08 × 369.04
  4. Step 4: Simplify right side
    694.12x = 383,831.12
  5. Step 5: Solve for x
    x = 383,831.12/694.12
  6. Step 6: Final answer
    x = 552.98

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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.