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Finding the Fourth Proportional to 602.27, 831.09 and 353.57

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Solution

The fourth proportional to 602.27, 831.09 and 353.57 is: 487.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.27 : 831.09 = 353.57 : x
  2. Step 2: Convert to fraction form
    602.27/831.09 = 353.57/x
  3. Step 3: Cross multiply
    602.27x = 831.09 × 353.57
  4. Step 4: Simplify right side
    602.27x = 293,846.72
  5. Step 5: Solve for x
    x = 293,846.72/602.27
  6. Step 6: Final answer
    x = 487.90

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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.