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Finding the Fourth Proportional to 335.46, 503.12 and 129.96

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Solution

The fourth proportional to 335.46, 503.12 and 129.96 is: 194.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.46 : 503.12 = 129.96 : x
  2. Step 2: Convert to fraction form
    335.46/503.12 = 129.96/x
  3. Step 3: Cross multiply
    335.46x = 503.12 × 129.96
  4. Step 4: Simplify right side
    335.46x = 65,384.83
  5. Step 5: Solve for x
    x = 65,384.83/335.46
  6. Step 6: Final answer
    x = 194.91

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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.