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Finding the Fourth Proportional to 335.55, 503.32 and 140.54

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Solution

The fourth proportional to 335.55, 503.32 and 140.54 is: 210.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.55 : 503.32 = 140.54 : x
  2. Step 2: Convert to fraction form
    335.55/503.32 = 140.54/x
  3. Step 3: Cross multiply
    335.55x = 503.32 × 140.54
  4. Step 4: Simplify right side
    335.55x = 70,736.59
  5. Step 5: Solve for x
    x = 70,736.59/335.55
  6. Step 6: Final answer
    x = 210.81

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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.