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Finding the Fourth Proportional to 239.15, 357.01 and 222.75

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Solution

The fourth proportional to 239.15, 357.01 and 222.75 is: 332.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.15 : 357.01 = 222.75 : x
  2. Step 2: Convert to fraction form
    239.15/357.01 = 222.75/x
  3. Step 3: Cross multiply
    239.15x = 357.01 × 222.75
  4. Step 4: Simplify right side
    239.15x = 79,523.42
  5. Step 5: Solve for x
    x = 79,523.42/239.15
  6. Step 6: Final answer
    x = 332.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.