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Finding the Fourth Proportional to 335.82, 503.61 and 143.22

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Solution

The fourth proportional to 335.82, 503.61 and 143.22 is: 214.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.82 : 503.61 = 143.22 : x
  2. Step 2: Convert to fraction form
    335.82/503.61 = 143.22/x
  3. Step 3: Cross multiply
    335.82x = 503.61 × 143.22
  4. Step 4: Simplify right side
    335.82x = 72,127.02
  5. Step 5: Solve for x
    x = 72,127.02/335.82
  6. Step 6: Final answer
    x = 214.78

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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.