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Finding the Fourth Proportional to 230.52, 345.16 and 207.84

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Solution

The fourth proportional to 230.52, 345.16 and 207.84 is: 311.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.52 : 345.16 = 207.84 : x
  2. Step 2: Convert to fraction form
    230.52/345.16 = 207.84/x
  3. Step 3: Cross multiply
    230.52x = 345.16 × 207.84
  4. Step 4: Simplify right side
    230.52x = 71,738.05
  5. Step 5: Solve for x
    x = 71,738.05/230.52
  6. Step 6: Final answer
    x = 311.20

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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.