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Finding the Fourth Proportional to 602.20, 831.08 and 336.66

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Solution

The fourth proportional to 602.20, 831.08 and 336.66 is: 464.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.20 : 831.08 = 336.66 : x
  2. Step 2: Convert to fraction form
    602.20/831.08 = 336.66/x
  3. Step 3: Cross multiply
    602.20x = 831.08 × 336.66
  4. Step 4: Simplify right side
    602.20x = 279,789.71
  5. Step 5: Solve for x
    x = 279,789.71/602.20
  6. Step 6: Final answer
    x = 464.62

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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.