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Finding the Fourth Proportional to 505.10, 757.40 and 196.74

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Solution

The fourth proportional to 505.10, 757.40 and 196.74 is: 295.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.10 : 757.40 = 196.74 : x
  2. Step 2: Convert to fraction form
    505.10/757.40 = 196.74/x
  3. Step 3: Cross multiply
    505.10x = 757.40 × 196.74
  4. Step 4: Simplify right side
    505.10x = 149,010.88
  5. Step 5: Solve for x
    x = 149,010.88/505.10
  6. Step 6: Final answer
    x = 295.01

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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.