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Finding the Fourth Proportional to 239.72, 357.84 and 223.52

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Solution

The fourth proportional to 239.72, 357.84 and 223.52 is: 333.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.72 : 357.84 = 223.52 : x
  2. Step 2: Convert to fraction form
    239.72/357.84 = 223.52/x
  3. Step 3: Cross multiply
    239.72x = 357.84 × 223.52
  4. Step 4: Simplify right side
    239.72x = 79,984.40
  5. Step 5: Solve for x
    x = 79,984.40/239.72
  6. Step 6: Final answer
    x = 333.66

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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.