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Finding the Fourth Proportional to 335.55, 503.43 and 198.69

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Solution

The fourth proportional to 335.55, 503.43 and 198.69 is: 298.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.55 : 503.43 = 198.69 : x
  2. Step 2: Convert to fraction form
    335.55/503.43 = 198.69/x
  3. Step 3: Cross multiply
    335.55x = 503.43 × 198.69
  4. Step 4: Simplify right side
    335.55x = 100,026.51
  5. Step 5: Solve for x
    x = 100,026.51/335.55
  6. Step 6: Final answer
    x = 298.10

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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.