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Finding the Fourth Proportional to 507.09, 760.08 and 198.85

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Solution

The fourth proportional to 507.09, 760.08 and 198.85 is: 298.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.09 : 760.08 = 198.85 : x
  2. Step 2: Convert to fraction form
    507.09/760.08 = 198.85/x
  3. Step 3: Cross multiply
    507.09x = 760.08 × 198.85
  4. Step 4: Simplify right side
    507.09x = 151,141.91
  5. Step 5: Solve for x
    x = 151,141.91/507.09
  6. Step 6: Final answer
    x = 298.06

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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.