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Finding the Fourth Proportional to 235.55, 323.23 and 231.10

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Solution

The fourth proportional to 235.55, 323.23 and 231.10 is: 317.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.55 : 323.23 = 231.10 : x
  2. Step 2: Convert to fraction form
    235.55/323.23 = 231.10/x
  3. Step 3: Cross multiply
    235.55x = 323.23 × 231.10
  4. Step 4: Simplify right side
    235.55x = 74,698.45
  5. Step 5: Solve for x
    x = 74,698.45/235.55
  6. Step 6: Final answer
    x = 317.12

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.