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Finding the Fourth Proportional to 335.32, 502.86 and 142.84

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Solution

The fourth proportional to 335.32, 502.86 and 142.84 is: 214.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.32 : 502.86 = 142.84 : x
  2. Step 2: Convert to fraction form
    335.32/502.86 = 142.84/x
  3. Step 3: Cross multiply
    335.32x = 502.86 × 142.84
  4. Step 4: Simplify right side
    335.32x = 71,828.52
  5. Step 5: Solve for x
    x = 71,828.52/335.32
  6. Step 6: Final answer
    x = 214.21

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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.