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Finding the Fourth Proportional to 604.26, 831.87 and 438.18

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Solution

The fourth proportional to 604.26, 831.87 and 438.18 is: 603.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.26 : 831.87 = 438.18 : x
  2. Step 2: Convert to fraction form
    604.26/831.87 = 438.18/x
  3. Step 3: Cross multiply
    604.26x = 831.87 × 438.18
  4. Step 4: Simplify right side
    604.26x = 364,508.80
  5. Step 5: Solve for x
    x = 364,508.80/604.26
  6. Step 6: Final answer
    x = 603.23

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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.