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Finding the Fourth Proportional to 505.08, 757.35 and 231.03

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Solution

The fourth proportional to 505.08, 757.35 and 231.03 is: 346.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.08 : 757.35 = 231.03 : x
  2. Step 2: Convert to fraction form
    505.08/757.35 = 231.03/x
  3. Step 3: Cross multiply
    505.08x = 757.35 × 231.03
  4. Step 4: Simplify right side
    505.08x = 174,970.57
  5. Step 5: Solve for x
    x = 174,970.57/505.08
  6. Step 6: Final answer
    x = 346.42

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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.