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Finding the Fourth Proportional to 336.55, 501.81 and 331.43

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Solution

The fourth proportional to 336.55, 501.81 and 331.43 is: 494.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.55 : 501.81 = 331.43 : x
  2. Step 2: Convert to fraction form
    336.55/501.81 = 331.43/x
  3. Step 3: Cross multiply
    336.55x = 501.81 × 331.43
  4. Step 4: Simplify right side
    336.55x = 166,312.38
  5. Step 5: Solve for x
    x = 166,312.38/336.55
  6. Step 6: Final answer
    x = 494.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.