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Finding the Fourth Proportional to 603.41, 831.53 and 406.58

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Solution

The fourth proportional to 603.41, 831.53 and 406.58 is: 560.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.41 : 831.53 = 406.58 : x
  2. Step 2: Convert to fraction form
    603.41/831.53 = 406.58/x
  3. Step 3: Cross multiply
    603.41x = 831.53 × 406.58
  4. Step 4: Simplify right side
    603.41x = 338,080.33
  5. Step 5: Solve for x
    x = 338,080.33/603.41
  6. Step 6: Final answer
    x = 560.29

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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.