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Finding the Fourth Proportional to 335.37, 502.98 and 129.81

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Solution

The fourth proportional to 335.37, 502.98 and 129.81 is: 194.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.37 : 502.98 = 129.81 : x
  2. Step 2: Convert to fraction form
    335.37/502.98 = 129.81/x
  3. Step 3: Cross multiply
    335.37x = 502.98 × 129.81
  4. Step 4: Simplify right side
    335.37x = 65,291.51
  5. Step 5: Solve for x
    x = 65,291.51/335.37
  6. Step 6: Final answer
    x = 194.68

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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.