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Finding the Fourth Proportional to 602.39, 831.26 and 340.43

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Solution

The fourth proportional to 602.39, 831.26 and 340.43 is: 469.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.39 : 831.26 = 340.43 : x
  2. Step 2: Convert to fraction form
    602.39/831.26 = 340.43/x
  3. Step 3: Cross multiply
    602.39x = 831.26 × 340.43
  4. Step 4: Simplify right side
    602.39x = 282,982.54
  5. Step 5: Solve for x
    x = 282,982.54/602.39
  6. Step 6: Final answer
    x = 469.76

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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.