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Finding the Fourth Proportional to 334.96, 502.20 and 161.72

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Solution

The fourth proportional to 334.96, 502.20 and 161.72 is: 242.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    334.96 : 502.20 = 161.72 : x
  2. Step 2: Convert to fraction form
    334.96/502.20 = 161.72/x
  3. Step 3: Cross multiply
    334.96x = 502.20 × 161.72
  4. Step 4: Simplify right side
    334.96x = 81,215.78
  5. Step 5: Solve for x
    x = 81,215.78/334.96
  6. Step 6: Final answer
    x = 242.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.